KR101865105B1 - Gas pressure falling device and mounting method therefor - Google Patents

Gas pressure falling device and mounting method therefor Download PDF

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Publication number
KR101865105B1
KR101865105B1 KR1020180041271A KR20180041271A KR101865105B1 KR 101865105 B1 KR101865105 B1 KR 101865105B1 KR 1020180041271 A KR1020180041271 A KR 1020180041271A KR 20180041271 A KR20180041271 A KR 20180041271A KR 101865105 B1 KR101865105 B1 KR 101865105B1
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KR
South Korea
Prior art keywords
pressure
transformer
gas
ground
apparatus housing
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KR1020180041271A
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Korean (ko)
Inventor
최광식
최재일
Original Assignee
대흥전력기술 주식회사
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Priority to KR1020180041271A priority Critical patent/KR101865105B1/en
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Publication of KR101865105B1 publication Critical patent/KR101865105B1/en

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    • 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
    • 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
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H01F27/402—Association of measuring or protective means

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

The present invention relates to a gas pressure automatic regulator for a ground or punch transformer and a method of installing the same. The gas pressure automatic regulator for a ground or punch transformer of the present invention comprises: a device housing (1); A nipple (GAS INLET) 10 provided at one side of the apparatus housing 1 and into which gas flows; A solenoid valve (12) for automatically exhausting when the internal pressure of the apparatus housing (1) reaches a predetermined reference pressure of 0.5 psi or more; And a pressure relief device 15 provided at the other side of the apparatus housing 1 opposite to the nipple 10 for discharging the gas at 10 psi in the event of malfunction of the solenoid valve 12, .

Description

Technical Field [0001] The present invention relates to a gas pressure automatic regulator for a ground or pneumatic transformer,

The present invention relates to a gas pressure automatic regulator for a ground or punch transformer and a method of installing the gas pressure automatic regulator and more particularly to a gas pressure automatic regulator for a ground or punch transformer which can be caused by overpressure inside the transformer, The present invention relates to a gas pressure automatic regulator for a ground or pneumatic transformer capable of preventing an explosion inside a transformer and leakage of components, thereby significantly reducing power failure or personal injury.

The ground or punch transformer is equipped with a pressure relief that automatically releases gas at an internal pressure of 10 psi and automatically returns when the internal pressure reaches 7 psi.

In order to prevent the explosion due to the abnormal rise of the internal pressure of the ground or punch transformer and the ejection of the dielectric oil, KPS has installed an instantaneous pressure reducing device in the transformer tank for the products released after 2002.

The instantaneous pressure relief device is made by installing a breakdown port with a sharp cutter above the safety membrane, with a safety vent at the top of the tank in the transformer, with a pressure vent at the top of the tank.

Therefore, when the inside of the transformer tank is overpressured by 20 psi, the thin aluminum film is deformed due to the pressure and bulges upwards convexly. In this process, the aluminum material touches the broken- So that the expanded insulating oil and the internal pressure gas are discharged to the outside of the transformer tank, thereby dropping the internal pressure.

Since the instantaneous pressure relief device operates at an overpressure of 20 psi and the tidal pressure is also operated at an overpressure of 10 psi, the internal pressure of the transformer always maintains a pressure higher than the atmospheric pressure.

In order to maintain the safe operation of the ground or pancake transformer and the safety of the operator, the internal pressure of the ground or pancake transformer is maintained at a similar pressure to the atmospheric pressure before the breakdown of the instantaneous pressure reducing apparatus occurs, However, until now, no device has been proposed to implement such a function, so it is required to develop a technology for a gas pressure automatic regulator for a ground or punch transformer.

Korea Patent Office Application No. 10-2002-7017550 Korea Patent Office Application No. 10-2007-0122063 Korea Patent Office Application No. 10-2012-0052323 Korea Patent Office Application No. 20-1993-0024881

It is an object of the present invention to keep the pressure inside the transformer constant at a constant atmospheric pressure and thereby to prevent the explosion inside the transformer and leakage of the components which may be caused by overpressure inside the transformer, The present invention provides a gas pressure automatic regulator for a ground or pneumatic transformer and a method of installing the same.

The object is achieved by a device housing (1); A nipple (GAS INLET) 10 provided at one side of the apparatus housing 1 and through which gas is introduced; A solenoid valve (12) for automatically exhausting when the internal pressure of the apparatus housing (1) reaches a predetermined reference pressure of 0.5 psi or more; And the other side of the apparatus housing 1 opposite to the nipple 10. The gas in the apparatus housing 1 is discharged by the action of the solenoid valve 12, And a pressure relief device (15) for causing the gas to be exhausted at 10 psi.

A digital pressure gauge (13) coupled to the device housing (1) at an upper position of the pressure relief valve (15), for sensing an internal pressure of the device housing (1) and displaying a value thereof; And a controller (30) for controlling the solenoid valve (12) to be automatically operated based on a sensing signal from the digital pressure gauge (13).

A manifold (11) provided on one side of the apparatus housing (1); An AC / DC converter (AC / DC converter) 14 for supplying power to the digital pressure gauge 13; And a power line 16 for electrically connecting components in the apparatus housing 1 and supplying power.

The object of the present invention is also achieved by a method for diagnosing a deterioration phenomenon of existing parts of a transformer using an infrared camera before installing the gas pressure automatic regulator for a ground or punch transformer of claim 1; A step of installing a safety cover insulated from the secondary side or the wire side of the transformer when there is no abnormality; An existing depressurization step of depressurizing the existing pressure relief valve connected to the transformer using a tool; A seal taping step for sealing taping so that leakage does not occur in the pressure-relief hole area formed at the place where the existing pressure-proof side is removed; A gas pressure automatic regulator primary coupling step of firstly coupling a nipple (GAS INLET, 10) of the gas pressure automatic regulator for ground or pneumatic transformer to the seal-taped hole at the pressure-relief hole; A voltage checking step of connecting an AC / DC converter (14) of the gas pressure automatic regulator for a ground or punch transformer to check whether a normal voltage flows in a digital pressure gauge (13); A gas pressure automatic regulator for completely fixing the gas pressure regulator for the ground or punch transformer when no abnormality exists; And a pressure state confirming step of confirming a pressure state by pulling a pressure relief device (15) provided at one side of the gas pressure automatic regulator for a ground or punch transformer But also by a method of installing the automatic regulator.

On the other hand, the above object can be achieved by an internal pressure measuring step of measuring the internal pressure of the apparatus housing 1 using a digital pressure gauge 13 of an automatic gas pressure regulator for a ground or pneumatic transformer according to the present invention; When the internal pressure of the apparatus housing 1 is equal to or higher than a predetermined reference pressure of 0.5 psi, the solenoid valve 12 automatically expels the exhaust gas through a pressure relief device 15, step; And an internal pressure constant display step of sensing an internal pressure of the apparatus housing (1) and causing the value to be always displayed on a digital pressure gauge (13). It is also achieved by a method of operating the automatic regulator.

According to the present invention, by keeping the pressure inside the transformer constant at a constant atmospheric pressure, it is possible to prevent the explosion inside the transformer and leakage of the components, which may be caused by the overpressure inside the transformer, The damage can be remarkably reduced.

1 is a front structural view of a gas pressure automatic regulator of a ground or punch transformer according to an embodiment of the present invention.
Fig. 2 is a side view of the structure of Fig. 1. Fig.
FIGS. 3 and 4 are photographs of a ground-type transformer installed in a gas pressure automatic regulator according to an embodiment of the present invention.
5 and 6 are photographs showing installation of a pneumatic transformer of an automatic gas pressure regulator according to an embodiment of the present invention.
7 is a control block diagram of a gas pressure automatic regulator of a ground or punch transformer according to an embodiment of the present invention.
8 is a flowchart of a method of installing an automatic gas pressure regulator for a ground or punch transformer according to another embodiment of the present invention.
9 is a test report of the gas pressure automatic regulator of FIG.
10 to 12 are test results for the gas pressure automatic regulator of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

However, the description of the present invention is merely an example for structural or functional explanation, and thus the scope of the present invention should not be construed as being limited by the embodiments described in the text.

For example, since the embodiments are susceptible to various modifications and various forms, the scope of the present invention should be construed as including equivalents capable of realizing technical ideas.

It is to be understood that the scope of the present invention should not be construed as being limited thereto since the object or effect of the present invention is not limited to the specific embodiment.

In the present specification, the present embodiment is provided to complete the disclosure of the present invention and to fully disclose the scope of the invention to a person having ordinary skill in the art to which the present invention belongs. And the present invention is only defined by the scope of the claims.

Thus, in some embodiments, well known components, well known operations, and well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention.

It is to be understood that the meaning of the terms used in the present invention is not limited to a dictionary meaning, but should be understood as follows.

It is to be understood that when an element is referred to as being "connected" to another element, it may be directly connected to the other element, but there may be other elements in between. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

It should be understood that the singular " include "or" have "are to be construed as including a stated feature, number, step, operation, component, It is to be understood that the combination is intended to specify that it does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined.

Commonly used predefined terms should be interpreted to be consistent with the meanings in the context of the related art and can not be interpreted as having ideal or overly formal meaning unless explicitly defined in the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the description of the embodiments, the same components are denoted by the same reference numerals, and explanations of the same reference numerals will be omitted in some cases.

FIG. 1 is a front structural view of a gas pressure automatic regulator of a ground or punch transformer according to an embodiment of the present invention. FIG. 2 is a side view of the structure of FIG. 1. FIGS. 5 and 6 are photographs of pillar-type transformer installation of a gas pressure automatic regulator according to an embodiment of the present invention, and Fig. 7 is a cross-sectional view of a ground-type or pillar-form transformer according to an embodiment of the present invention. Fig. 8 is a flow chart of a method of installing the gas pressure automatic regulator for a ground or punch transformer according to another embodiment of the present invention, Fig. 9 is a flow chart of a test for the gas pressure automatic regulator of Fig. 1 Test report, Figs. 10 to 12 show test results for the gas pressure automatic regulator of Fig.

Referring to these drawings, in the present embodiment, by keeping the pressure inside the transformer constant at a constant air pressure similar to the atmospheric pressure, it is possible to prevent explosion inside the transformer and leakage of the components, which may be caused by overpressure inside the transformer, This can significantly reduce power outages and casualties.

In other words, by maintaining the pressure in the transformer's housing (1) below 0.7 psi, which is the approximate value of the atmospheric pressure, it is possible to prevent explosion inside the transformer due to increase in internal pressure and leakage of parts, It is.

The gas pressure automatic regulator of the ground or punch transformer according to the present embodiment, which can provide such an effect, includes an apparatus housing 1, a nipple (GAS INLET) 10, a solenoid valve 12, RELIEF DEVICE, 15).

The apparatus housing 1 forms the appearance of the gas pressure automatic regulator of the ground or punch transformer according to the present embodiment. It can be formed as an injection molding, and supports each part by position.

A nipple (GAS INLET) 10 is provided at one side of the apparatus housing 1 and constitutes a place where gas is introduced.

The solenoid valve 12 serves to automatically exhaust air when the internal pressure of the apparatus housing 1 reaches a predetermined reference pressure of 0.5 psi or more.

The PRESS RELIEF DEVICE 15 is provided on the other side of the apparatus housing 1 opposite to the nipple 10 and serves to exhaust gas at 10 psi in case of malfunction of the solenoid valve 12 .

A manifold 11 is provided at one side of the apparatus housing 1. [ An AC / DC converter (AC / DC converter) 14 for supplying power to a digital pressure gauge 13, which will be described later, is provided around the manifold 11.

A power line 16 is provided in the apparatus housing 1 for electrically connecting components in the apparatus housing 1 and supplying power.

On the other hand, the digital pressure gauge 13 and the controller 30 are further provided in the gas pressure automatic regulator for the ground or punch transformer according to the present embodiment.

The digital pressure gauge 13 is coupled to the device housing 1 at an upper position of the discharge pressure side 15 and serves to sense the internal pressure of the device housing 1 and display the value thereof.

The controller 30 controls the solenoid valve 12 to be automatically operated based on the sensing signal from the digital pressure gauge 13. [ Even if the digital pressure gauge 13 fails, the solenoid valve 12 is automatically operated so that the gas discharge can proceed automatically.

The controller 30 may include a central processing unit 31, a CPU 32, a memory 32, and a support circuit 33 (SUPPORT CIRCUIT).

The central processing unit 31 may be one of various computer processors that can be industrially applied to control the solenoid valve 12 to be operated automatically based on the sensing signal from the digital pressure gauge 13 in this embodiment have.

The memory 32 (MEMORY) is connected to the central processing unit 31. The memory 32 may be a computer-readable recording medium and may be located locally or remotely and may be any suitable computer readable medium such as, for example, a random access memory (RAM), a ROM, a floppy disk, May be at least one or more memories.

A support circuit 33 (SUPPORT CIRCUIT) is coupled with the central processing unit 31 to support the typical operation of the processor. Such a support circuit 33 may include a cache, a power supply, a clock circuit, an input / output circuit, a subsystem, and the like.

The controller 30 controls the solenoid valve 12 to be automatically operated based on the sensing signal from the digital pressure gauge 13. This series of control processes and the like can be stored in the memory 32 have. Typically, a software routine may be stored in the memory 32. [ The software routines may also be stored or executed by other central processing units (not shown).

Although processes according to the present invention are described as being performed by software routines, it is also possible that at least some of the processes of the present invention may be performed by hardware. As such, the processes of the present invention may be implemented in software executed on a computer system, or in hardware such as an integrated circuit, or in combination of software and hardware.

On the other hand, the gas pressure automatic regulator for the ground or punch transformer described above can be operated as follows.

The internal pressure of the apparatus housing 1 is measured using a digital pressure gauge 13 of a gas pressure automatic regulator for a ground or pneumatic transformer according to the present embodiment (S11).

When the internal pressure of the apparatus housing 1 is equal to or higher than a predetermined reference pressure of 0.5 psi, the solenoid valve 12 automatically performs the exhaust operation (S12). Therefore, the risk of internal explosion can be eliminated.

The internal pressure of the device housing 1 is sensed and the value is constantly displayed on the digital pressure gauge 13 (S13), so that it can always be monitored.

On the other hand, the above-described gas pressure automatic regulator for a ground or punch transformer can be installed in the following manner. The installed state is shown in each of Figs. 3 to 8 without reference to the drawings.

First, the deterioration phenomenon of each component of the transformer is diagnosed using a thermal camera before installing the gas pressure automatic regulator for ground or punch transformer according to the present embodiment (S21).

If there is no abnormality, a safety cover (not shown) that can insulate the secondary side or the wire side of the transformer is installed (S22). Then, the existing pressure relief valve connected to the transformer is removed using a tool (S23).

The seal taping is performed so that leakage does not occur in the pressure-relief hole area formed at the place where the existing pressure-proof side is removed (S24).

Then, the nipple (GAS INLET, 10) of the gas pressure automatic regulator for ground or punching transformer according to the present embodiment is firstly coupled to the seal-taped hollowed-out hole (S25).

Next, an AC / DC converter (AC / DC converter) 14 of a gas pressure automatic regulator for a ground or punch transformer according to the present embodiment is connected to check whether a normal voltage is flowing to the digital pressure gauge (DIGITAL PRESSURE GAUGE) (S26).

If there is no abnormality after checking, the gas pressure automatic regulator for a ground or pneumatic transformer according to the present embodiment is completely fixed (S27).

Next, the installation can be finally completed by confirming the pressure state (S28) by pulling a PRESS RELIEF DEVICE 15 provided at one side of the gas pressure automatic regulator for a ground or punch transformer according to the present embodiment.

According to this embodiment having the structure and action as described above, the pressure inside the transformer is always kept constant at atmospheric pressure similar to atmospheric pressure, thereby preventing explosion inside the transformer and leakage of the components caused by the overpressure inside the transformer , Which can significantly reduce power outages and human casualties.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. It is therefore intended that such modifications or alterations be within the scope of the claims appended hereto.

1: Device housing
10: NIPLE (GAS INLET)
11: Manifold (MANIFOLD)
12: Solenoid valve (SOLENOID VALVE)
13: Digital pressure gauge (DIGITAL PRESSURE GAUGE)
14: AC / DC converter (AC / DC CONVERTER)
15: PRESS RELIEF DEVICE
16: Power line (POWER LINE)
30: Controller

Claims (5)

Device housing (1);
A nipple (GAS INLET) 10 provided at one side of the apparatus housing 1 and into which gas flows;
A solenoid valve 12 for automatically exhausting when the internal pressure of the apparatus housing 1 is equal to or higher than a predetermined reference pressure of 0.5 psi; And
The gas is exhausted from the device housing 1 by the action of the solenoid valve 12, and when the solenoid valve malfunctions, (PRESS RELIEF DEVICE, 15) which causes the gas pressure to be exhausted at 10 psi.
The method according to claim 1,
A digital pressure gauge (13) coupled to the device housing (1) at an upper position of the pressure relief valve (15), for sensing an internal pressure of the device housing (1) and displaying a value thereof; And
Further comprising a controller (30) for automatically controlling the solenoid valve (12) to operate based on a sensing signal from the digital pressure gauge (13).
3. The method of claim 2,
A manifold (11) provided on one side of the apparatus housing (1);
An AC / DC converter (AC / DC converter) 14 for supplying power to the digital pressure gauge 13; And
Further comprising a power line (16) for electrically connecting components in the apparatus housing (1) while supplying power to the apparatus housing (1).
A deterioration diagnosis step of existing parts for diagnosing deterioration of respective parts of the transformer using a thermal camera before installing the gas pressure automatic regulator for the ground or punch transformer of claim 1;
A step of installing a safety cover insulated from the secondary side or the wire side of the transformer when there is no abnormality;
An existing depressurization step of depressurizing the existing pressure relief valve connected to the transformer using a tool;
A seal taping step for sealing taping so that leakage does not occur in the pressure-relief hole area formed at the place where the existing pressure-proof side is removed;
A gas pressure automatic regulator primary coupling step of firstly coupling a nipple (GAS INLET, 10) of the gas pressure automatic regulator for ground or pneumatic transformer to the seal-taped hole at the pressure-relief hole;
A voltage checking step of connecting an AC / DC converter (14) of the gas pressure automatic regulator for the ground or punch transformer to check whether a normal voltage flows in the digital pressure gauge (13);
A gas pressure automatic regulator for completely fixing the gas pressure regulator for the ground or punch transformer when no abnormality exists; And
And a pressure state confirming step of confirming a pressure state by pulling a pressure relief device (15) provided at one side of the gas pressure automatic regulator for the ground or punch transformer. How to install the regulator.
An internal pressure measuring step of measuring an internal pressure of the apparatus housing 1 using a digital pressure gauge 13 of an automatic gas pressure regulator for ground or pneumatic transformer according to claim 1;
When the internal pressure of the apparatus housing 1 is equal to or higher than a predetermined reference pressure of 0.5 psi, the solenoid valve 12 automatically expels the exhaust gas through a pressure relief device 15, step; And
Characterized in that it includes an internal pressure constant indication step of sensing the internal pressure of the apparatus housing (1) and constantly displaying the value in the digital pressure gauge (13) How to operate the regulator.
KR1020180041271A 2018-04-09 2018-04-09 Gas pressure falling device and mounting method therefor KR101865105B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210092457A (en) * 2020-01-16 2021-07-26 현대일렉트릭앤에너지시스템(주) Pressure rising simulator of transformer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100668877B1 (en) * 2005-08-18 2007-01-12 동미전기공업(주) POLE TRANSFORMER OF Ë 6 alpha Ë INSULATED TYPE
KR20070122063A (en) 2006-06-23 2007-12-28 선용주 Sensor zigbee module
JP2009500818A (en) * 2005-06-29 2009-01-08 フィリップ マニエ Transformer explosion prevention device
KR20120052323A (en) 2009-07-17 2012-05-23 케이엘에이-텐코 코포레이션 Scanner performance comparison and matching using design and defect data
JP2014129847A (en) * 2012-12-28 2014-07-10 Toto Ltd Valve driving device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009500818A (en) * 2005-06-29 2009-01-08 フィリップ マニエ Transformer explosion prevention device
JP2012074728A (en) * 2005-06-29 2012-04-12 Philippe Magnier Device for preventing explosion of electrical transformer
KR100668877B1 (en) * 2005-08-18 2007-01-12 동미전기공업(주) POLE TRANSFORMER OF Ë 6 alpha Ë INSULATED TYPE
KR20070122063A (en) 2006-06-23 2007-12-28 선용주 Sensor zigbee module
KR20120052323A (en) 2009-07-17 2012-05-23 케이엘에이-텐코 코포레이션 Scanner performance comparison and matching using design and defect data
JP2014129847A (en) * 2012-12-28 2014-07-10 Toto Ltd Valve driving device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210092457A (en) * 2020-01-16 2021-07-26 현대일렉트릭앤에너지시스템(주) Pressure rising simulator of transformer
KR102344419B1 (en) 2020-01-16 2021-12-28 현대일렉트릭앤에너지시스템(주) Pressure rising simulator of transformer

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