KR101586393B1 - Equal pressure apparatus utilized during vacuuming electrical transformer - Google Patents

Abstract

The present invention relates to an apparatus for distributing the vacuum of a transformer. More particularly, the present invention relates to an apparatus for distributing the vacuum of a transformer which can inspect transformers (1), effectively perform a vacuum process for installing the transformers (1), and stably perform a vacuum releasing process.

Description

[0001] The present invention relates to an apparatus for vacuum distribution of a transformer,

The present invention relates to a vacuum distributing apparatus for a transformer, and more particularly, to a vacuum distributing apparatus for a transformer, more particularly, it is possible to check a plurality of transformers, perform a vacuum operation performed when installing a plurality of transformers, And to an apparatus for vacuum distribution of a transformer having an effect that can be performed.

Generally, a transformer is a device that changes the value of AC voltage or current by using electromagnetic induction phenomenon. After coil is wound on both sides of the iron core, power is connected to one side and gal current is connected to the other side, When a current flows through a coil, a magnetic field is formed in the coil and the iron core. Therefore, when the current supplied from the power source changes with time, the magnitude of the magnetic field changes as well. The magnetic field is transmitted through the iron core, And the electromagnetic induction induction electromotive force is generated in the opposite coil.

The on-load tap-changer (OLTC) is attached to the transformer. The transformer with the tap-changer is also referred to as a on-load tap-changer, and the tap-change converter is effective This structure is used to adjust the transformer ratio of a transformer without affecting power, reactive power, etc., and is widely used in a transformer of a substation for distribution.

The tap change-over switching device is configured to select and switch the position of the tap by a control switch, and is configured to manually lift and lower the tab of the required voltage.

Registration Practical Utility Model No. 20-0345460 discloses a tap-change converter of such a transformer, and a structure for preventing an accident for preventing malfunction is disclosed. As another example, Korean Utility Model Registration No. 20-0378053 discloses a structure for preventing and protecting the internal explosion of the OLTC.

 Since the transformer operates at a high voltage during operation and easily deteriorates, insulating oil or nitrogen is injected to prevent deterioration. However, if the transformer is used for a long period of time, impurities such as moisture and deterioration are generated in the insulating oil. Therefore, the insulating oil is periodically inspected, and if necessary, the inside is subjected to an insulation reinforcing operation for removing moisture and filtering or replenishing or replacing the insulating oil. In this process, a work process using a vacuum pump is essentially performed.

Therefore, the transformer is required to have a device such as a nitrogen injector, a vacuum pump, etc. for its normal operation and maintenance.

However, in the case of a transformer equipped with a tap-change converter, a single vacuum pump is sequentially connected to the transformer main body and the tap-change converter, respectively, so as to be in a vacuum state. Or two vacuum pumps are respectively connected to the transformer main body and the tap change-over converter to make them in a vacuum state.

However, the material of the oil pressure chamber in which the tap-change transducer is placed is usually made of a poly resin or a fiberglass, and can be broken. Since the insulating oil in the oil chamber is contaminated by the arc generated when the tap changer operates, the oil is filtered after tapping to the oil filter unit. If there is a crack on the outer wall of the oil compartment, Which may cause the insulation performance of the transformer to deteriorate.

That is, when the inside of the transformer is made to be in a vacuum state, a vacuum state is established through the hose connected to the tap-changer and the transformer main body respectively by a vacuum pump. In order to make the internal pressure of the transformer and the OLTC equal, In this case, when a failure or an abnormality of the vacuum pump occurs, the vacuum operation must be restarted from the beginning.

Further, in releasing the vacuum inside the transformer, if the vacuum is abruptly released, there is a risk that bushing may occur or the vacuum tank and the tap-change transducer may be damaged.

On the other hand, such a vacuum apparatus has a problem in that it is difficult to work when a transformer is installed in a narrow space in which a vacuum apparatus can not fit because the vacuum apparatus is large in weight and large in volume.

Korean Utility Model Registration No. 20-0345460 (2004. 03. 18.) Korean Utility Model Registration No. 20-0378053 (2005. 03. 14.)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a vacuum distribution apparatus for a transformer, There is a purpose.

It is another object of the present invention to provide an apparatus for vacuum distribution of a transformer that can more reliably perform a vacuum releasing operation.

According to an aspect of the present invention,

An apparatus for vacuum distribution of a transformer,

A body 10 having a space therein;

And a first transformer coupling flange on the other side so that one side of the transformer is hermetically coupled with one of the phases of the transformer, A gas pipe (20);

(20) so as to be hermetically engaged with the two phases of the transformer (1), and a second gas pipe (20) is provided at one side thereof so as to be hermetically connected to one side of the main body A second gas pipe (30) comprising a flange for coupling a second transformer to the side;

(30), and one end of the second gas pipe (30) is hermetically coupled to one side of the main body (10), and the other side is connected to the three phases of the transformer A third gas pipe (40) comprising a flange for coupling a third transformer to the side;

A vacuum pump coupling portion (not shown) configured to be hermetically coupled to the other side of the main body 10 and having a flange for coupling the vacuum pump to the other side so that the other side portion can be hermetically coupled to the vacuum pump 3 50);

A nitrogen injection unit 60 configured to be hermetically coupled to any one of the main body 10 and including a nitrogen injection port for injecting nitrogen into the main body 10 from the nitrogen supply cylinder 2, Wow;

A dry air injection unit 70 configured to be hermetically coupled to any one of the main body 10 and including a dry air inlet so that dry air can be injected into the main body 10;

An internal pressure meter 80 configured to be hermetically coupled to any one of the main body 10 and configured to measure a pressure inside the main body 10;

And a vacuum sensor coupling unit 90 configured to be hermetically coupled to any one of the main body 10 and configured to couple a vacuum sensor 4 for detecting a vacuum state inside the main body 10, .

The present invention has the effect of providing a vacuum distribution apparatus for a transformer capable of checking a plurality of transformers or effectively performing a vacuum operation performed when installing a plurality of transformers.

Further, the present invention has the effect of providing a vacuum distribution apparatus for a transformer which can more reliably perform the operation of releasing the vacuum.

1 is a perspective view showing a configuration example of the present invention.
2 is a block diagram showing a connection state of a vacuum distributing apparatus for a transformer and a peripheral device used in a vacuum of a transformer according to an embodiment of the present invention.
3 is a block diagram showing a connection state of a vacuum distributing apparatus for a transformer and a peripheral device used in a vacuum of a transformer according to this embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The embodiments are provided to explain the present invention to a person having ordinary skill in the art to which the present invention belongs. Therefore, the shape of each element shown in the drawings may be exaggerated in order to emphasize a clearer explanation. In the description of the present invention, when it is judged that a detailed description of the related art may obscure the gist of the present invention, It is omitted.

The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by terms. Terms are used only for the purpose of distinguishing one component from another.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The present invention relates to an apparatus for vacuum distribution of a transformer, and more particularly to an apparatus for controlling a plurality of transformers (1), a vacuum operation performed when installing a plurality of transformers (1) FIG. 1 is a perspective view of a vacuum distributor of a transformer according to an embodiment of the present invention; FIG. 2 is a perspective view of a vacuum distributor of a transformer according to an embodiment of the present invention; FIG.

1 is a perspective view showing a configuration example of a vacuum distributing apparatus for a transformer of the present invention. Referring to Fig. 1, the present invention includes a main body 10, a first gas pipe 20, a second gas pipe 30, A vacuum pump coupling unit 50, a nitrogen injection unit 60, a dry air injection unit 70, an internal pressure measurement unit 80, and a vacuum sensor coupling unit 90.

More particularly, in a vacuum distribution apparatus for a transformer,

A main body 10 having a space formed therein,

And a first transformer coupling flange on the other side so that one side of the transformer is hermetically coupled with one of the phases of the transformer, A gas pipe 20,

(20) so as to be hermetically engaged with the two phases of the transformer (1), and a second gas pipe (20) is provided at one side thereof so as to be hermetically connected to one side of the main body A second gas pipe (30) including a flange for coupling the second transformer to the side,

(30), and one end of the second gas pipe (30) is hermetically coupled to one side of the main body (10), and the other side is connected to the three phases of the transformer A third gas pipe (40) comprising a flange for coupling a third transformer to the side,

A vacuum pump coupling portion (not shown) configured to be hermetically coupled to the other side of the main body 10 and having a flange for coupling the vacuum pump to the other side so that the other side portion can be hermetically coupled to the vacuum pump 3 50,

A nitrogen injection unit 60 configured to be hermetically coupled to any one of the main body 10 and including a nitrogen injection port for injecting nitrogen into the main body 10 from the nitrogen supply cylinder 2, Wow,

A drying air injection unit 70 configured to be hermetically coupled to any one of the main body 10 and including a drying air inlet so that dry air can be injected into the main body 10,

An internal pressure meter 80 configured to be hermetically coupled to any one of the main body 10 and configured to measure a pressure inside the main body 10,

And a vacuum sensor coupling unit 90 configured to be hermetically coupled to any one of the main body 10 and adapted to be coupled with a vacuum sensor 4 for measuring a vacuum state inside the main body 10 .

1 and 2, the first gas pipe 20 is hermetically coupled to one side of the main body 10, and the other side is hermetically coupled to one phase of the transformer 1 A duct is formed in the inside of the main body 10 so that the gas inside the main body 10 and the gas inside the transformer 1 are mutually moved and exchanged with each other, And a first on-off valve for controlling mutual movement and interchange of the inside of the main body 10 and the inside gas of the transformer 1. [

1 and 2, the second gas pipe 30 is configured such that one side thereof is hermetically coupled to one side of the main body 10, and is spaced apart from one side of the first gas pipe 20, And a flange for coupling the second transformer to the other side so that the other side can be hermetically coupled with the two phases of the transformer (1), wherein a duct is formed in the inside of the main body (10) Closing valve so as to control mutual movement and interchange of the inside of the main body 10 and the inner gas of the transformer 1, .

1 and 2, the third gas pipe 40 is configured such that one side thereof is hermetically coupled to one side of the main body 10, and is spaced from one side of the second gas pipe 30, And a flange for coupling the third transformer to the other side so that the other side can be hermetically engaged with the three phases of the transformer 1. The duct is formed in the inside of the main body 10, Closing valve so as to control mutual movement and interchange of the inside of the main body 10 and the inner gas of the transformer 1, .

Referring to FIGS. 1 and 2, the vacuum pump coupling part 50 is configured such that one side is hermetically coupled to the other side of the main body 10, and the other side is hermetically coupled to the vacuum pump 3 And a flange for coupling the vacuum pump to the other side of the main body 10, wherein a duct is formed in the main body 10 so that the gas inside the main body 10 is sucked by the suction force of the vacuum pump 3, And a vacuum opening / closing valve so as to control the suction of the gas inside the main body 10 from the vacuum pump 3.

1 and 2, the nitrogen injection unit 60 is configured to be hermetically coupled to any one of the main body 10, and nitrogen is supplied from the nitrogen supply cylinder 2 to the inside of the main body 10 And a nitrogen inlet port for introducing nitrogen into the main body 10 from the nitrogen supply tube 2 so that nitrogen can be injected from the nitrogen supply tube 2 into the main body 10, And may further include a nitrogen opening / closing valve so as to control injection of nitrogen. At this time, it is preferable that the nitrogen injection unit 60 is formed at any one of the upper portions of the main body 10.

1 and 2, the dry air injecting unit 70 is constructed to be hermetically coupled to any one part of the main body 10, and is configured to inject dry air into the main body 10, And a drying air inlet. The drying air can be introduced into the main body 10 from the outside through the drying air inlet and controls the flow of dry air into the main body 10 A dry air opening / closing valve may be further included. At this time, it is preferable that the dry air injecting part 70 is formed at any one of the upper part of the main body 10.

1 and 2, the vacuum sensor coupling unit 90 is hermetically coupled to any one of the main body 10, and includes a vacuum sensor for measuring a vacuum state inside the main body 10, And the vacuum sensor 4 is coupled to the vacuum sensor 4 so that the vacuum sensor 4 can be sensed. At this time, in order to prevent the gas inside the main body 10 from flowing out to the outside during the process of coupling the vacuum sensor 4 to the vacuum sensor coupling part 90, the vacuum sensor opening / It is possible. At this time, it is preferable that the vacuum sensor coupling portion 90 is formed at any one of the upper portions of the main body 10.

At least one support base may be coupled to the lower portion of the main body 10 so as to support the main body 10 upwardly from the ground. The first gas pipe 20, the second gas pipe 30, and the second gas pipe 30 are coupled to the main body 10 and the main body 10 when the vibration is generated, The vibration transmitted to the gas pipe 40, the vacuum pump coupling portion 50, the nitrogen injection portion 60, the dry air injection portion 70, the internal pressure measurement device 80, and the vacuum sensor coupling portion 90 is minimized .

In addition, when at least any one of the lower portions of the main body 10 includes a drain valve, when oil flows back in the vacuum pump 3 and oil flows into the main body 10, So that the oil introduced into the main body 10 can be discharged.

The first gas pipe 20, the second gas pipe 30 and the third gas pipe 40 are three-phase transformers 1 and 2, respectively, of the various transformers 1, The single-phase transformer 1 is connected to the first gas pipe 20, the second gas pipe 30 and the third gas pipe 40 as shown in FIG. 3, It is understood that it can be used in combination.

It will also be understood that although the terms first, second, etc. may be used herein to describe various elements, it is not desired that the elements be defined by terms, and terms are intended to distinguish one element from another Is understood to be used solely. Therefore, it is understood that the first gas pipe 20, the second gas pipe 30, and the third gas pipe 40 referred to in the present invention may be constructed by combining one or more gas pipes, N gas pipes may be combined with each other.

Therefore, the present invention not only has the effect of providing a vacuum distributor for a transformer that can check a plurality of transformers 1 or effectively perform a vacuum operation performed when installing a plurality of transformers 1, The vacuum distributor for a transformer according to the present invention has the following advantages.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is not.

10: Body
20, 30, 40: a gas pipe
50: Vacuum pump coupling part
60: Nitrogen injection part
70: Dry air injection unit
80: Internal Pressure Meter
90: Vacuum sensor coupling part

Claims (1)

An apparatus for vacuum distribution of a transformer,
A body 10 having a space therein;
And a first transformer coupling flange on the other side so that one side of the transformer is hermetically coupled with one of the phases of the transformer, A gas pipe (20);
(20) so as to be hermetically engaged with the two phases of the transformer (1), and a second gas pipe (20) is provided at one side thereof so as to be hermetically connected to one side of the main body A second gas pipe (30) comprising a flange for coupling a second transformer to the side;
(30), and one end of the second gas pipe (30) is hermetically coupled to one side of the main body (10), and the other side is connected to the three phases of the transformer A third gas pipe (40) comprising a flange for coupling a third transformer to the side;
A vacuum pump coupling portion (not shown) configured to be hermetically coupled to the other side of the main body 10 and having a flange for coupling the vacuum pump to the other side so that the other side portion can be hermetically coupled to the vacuum pump 3 50);
A nitrogen injection unit 60 configured to be hermetically coupled to any one of the main body 10 and including a nitrogen injection port for injecting nitrogen into the main body 10 from the nitrogen supply cylinder 2, Wow;
A dry air injection unit 70 configured to be hermetically coupled to any one of the main body 10 and including a dry air inlet so that dry air can be injected into the main body 10;
An internal pressure meter 80 configured to be hermetically coupled to any one of the main body 10 and configured to measure a pressure inside the main body 10;
And a vacuum sensor coupling unit 90 configured to be hermetically coupled to any one of the main body 10 and adapted to couple a vacuum sensor 4 for measuring a vacuum state inside the main body 10, However,
The first gas pipe 20 further includes a first opening and closing valve configured to control mutual movement and interchange of the inside of the main body 10 and the inner gas of the transformer 1,
The second gas pipe 30 further comprises a second on-off valve configured to control mutual movement and interchange of the inside of the main body 10 and the inner gas of the transformer 1,
The third gas pipe (40) further comprises a third open / close valve configured to control mutual movement and interchange of the inside of the main body (10) and the inner gas of the transformer (1)
The vacuum pump coupling unit 50 further includes a vacuum opening / closing valve configured to control the suction of gas inside the main body 10 from the vacuum pump 3,
The nitrogen injection unit 60 may further include a nitrogen opening / closing valve formed at least one of the upper portions of the main body 10 so as to control injection of nitrogen into the main body 10,
The dry air injecting unit 70 may further include a dry air opening / closing valve formed in at least one of the upper portions of the main body 10 to control the introduction of dry air into the main body 10 ,
The vacuum sensor coupling unit 90 is connected to the vacuum sensor coupling unit 90 so that the vacuum sensor coupling unit 90 can prevent the gas inside the main body 10 from flowing out to the outside during the process of coupling the vacuum sensor 4 to the vacuum sensor coupling unit 90. [ A sensor opening / closing valve,
The main body 10 includes at least one support base formed at a lower portion of the main body 10 so as to support the main body 10 upwardly away from the ground, A second gas pipe 30, a third gas pipe 40, a vacuum pump coupling part 50, a nitrogen injection part 60, a dry air injection part 70, Further comprising an anti-vibration member coupled to a lower portion of the main body 10 so as to minimize vibration transmitted to the internal pressure meter 80 and the vacuum sensor coupler 90,
The main body 10 includes a main body 10 and a main body 10. The main body 10 includes a main body 10 and a main body 10, Further comprising a drain valve formed on at least one of a lower portion of the first chamber (10) and a lower portion of the second chamber (10).

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