KR100874480B1 - Cooling efficiency improved transformer - Google Patents

Cooling efficiency improved transformer Download PDF

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Publication number
KR100874480B1
KR100874480B1 KR1020070079500A KR20070079500A KR100874480B1 KR 100874480 B1 KR100874480 B1 KR 100874480B1 KR 1020070079500 A KR1020070079500 A KR 1020070079500A KR 20070079500 A KR20070079500 A KR 20070079500A KR 100874480 B1 KR100874480 B1 KR 100874480B1
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South Korea
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heat
transformer
tank
coil
header
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KR1020070079500A
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Korean (ko)
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홍월표
권순창
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동미전기공업(주)
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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
    • H01F27/08—Cooling; Ventilating
    • H01F27/085—Cooling by ambient air
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
    • H05K7/20336—Heat pipes, e.g. wicks or capillary pumps
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Power Engineering (AREA)
  • Transformer Cooling (AREA)

Abstract

A transformer improving cooling efficiency is provided to reduce insulating/quenching oil by discharging the heat rapidly through a heat absorption unit. A header(4) is arranged in an upper portion of a tank(3). A transformer main body(1) is composed by winding a first coil and a second coil around each side of a iron core with a rectangular shape composed of a laminated steel plate. A predetermined gap is installed by inserting a spacer by interposing an insulating sheet between a high voltage layer and a low voltage layer. A lower part of a heating pipe(7) for collecting the heat is inserted inside the gap between layers. An upper part(7b) of the heat pipe for collecting the heat is exposed by penetrating through the upper part of the tank and is connected to a heater pipe header having a radiation fin in the outer circumference.

Description

냉각성능이 향상된 변압기{COOLING EFFICIENCY IMPROVED TRANSFORMER }COOLING EFFICIENCY IMPROVED TRANSFORMER}

본 발명은 냉각 성능이 향상된 변압기에 관한 것이다.The present invention relates to a transformer with improved cooling performance.

일반적으로, 변압기는, 변압기 본체 및 이 변압기 본체를 절연 및 냉각하는 냉각/절연 매체가 탱크의 내부에 수용되어 구성되어 있다. 여기서, 냉각 성능의 향상을 꾀하기 위해서는, 코일의 전류 밀도를 내리거나 냉각 매체의 양을 늘리거나 하는 등의 대책이 필요하지만, 이 경우는, 기기의 대형화, 중량 증가를 부른다고 하는 문제가 있었다. 특히, 근래에는 변압기를 설치하는 스페이스 상의 제약으로부터, 소형화 및 경량화가 최우선의 과제이고, 그 때문에, 변압기의 냉각성의 개선이 바람직하고 있다.Generally, a transformer is comprised in which the transformer main body and the cooling / insulating medium which insulates and cools this transformer main body are accommodated in the tank. In order to improve the cooling performance, measures such as lowering the current density of the coil and increasing the amount of the cooling medium are required, but in this case, there is a problem that the size of the device is increased and the weight is increased. In particular, in recent years, miniaturization and weight reduction are the top priority from the constraints on the space in which the transformer is installed, and therefore, improvement in the cooling property of the transformer is desirable.

이러한 과제에 대해서, 히트 파이프를 이용해 냉각 성능의 향상을 꾀한 변압기의 일예가 공지되어 있다. 이 변압기는, 탱크의 내부에 변압기 본체 및 절연유가 수용되고 있음과 동시에, 히트 파이프가 상기 탱크를 관통하도록 배설되고 있다. 이 경우, 상기 히트 파이프의 하단부는, 탱크의 내부에 수용된 절연유 내에 배치되고, 상기 히트 파이프의 상단부는, 방열 핀이 설치되어 상기 탱크의 외부에 배치되어 있다. 그리고, 상기 방열 핀은 자연 바람에 접촉되도록 구성되어 있다. 따라서, 변압기 본체로 발생한 열은, 절연유를 개입시켜 히트 파이프에 전달된 후, 방열 핀을 개입시켜 방열된다.With respect to this problem, an example of a transformer for improving the cooling performance by using a heat pipe is known. In the transformer, the transformer body and the insulating oil are accommodated in the tank, and the heat pipe is disposed so as to pass through the tank. In this case, the lower end of the heat pipe is disposed in the insulating oil accommodated in the tank, and the upper end of the heat pipe is disposed outside the tank with heat dissipation fins provided. The heat dissipation fin is configured to be in contact with natural wind. Therefore, the heat generated by the transformer body is transferred to the heat pipe through the insulating oil, and then radiated through the heat radiation fins.

상기와 같이 구성된 종래의 변압기 냉각구조는 히트파이프의 흡열부가 코일부 외부의 절연유 내에 배치되어 있어서, 실제로 코일부의 소정영역에서만 고온의 열이 발생됨에도 불구하고 절연유가 전체적으로 일정 온도 이상 상승하여야만 작동하게 되어 있어서, 결국 절연유 전체를 냉각시키는 것으로 되어 있다.In the conventional transformer cooling structure configured as described above, the heat absorbing portion of the heat pipe is disposed in the insulating oil outside the coil portion, so that the insulating oil must rise above a certain temperature as a whole even though high temperature heat is generated only in a predetermined region of the coil portion. As a result, the entire insulating oil is cooled.

이러한 구조는 실지로 변압기의 주된 열발생원이 예를 들면 장방형 철심 모서리 부근에 배치된 코일부에서 발생한다는 관점에서 볼 때, 비효율적이다. This structure is inefficient in view of the fact that the main heat generating source of the transformer actually occurs in, for example, a coil part arranged near the corner of the rectangular iron core.

본 발명은 변압기에서의 주된 열발생원인 코일부의 국소부위에 히트파이프의 흡열부를 배치하고 히트파이프의 방열부를 변압기의 외부로 배치시킨 냉각 구조를 변압기에 제공하는 것을 목적으로 한다.An object of the present invention is to provide a transformer with a cooling structure in which a heat absorbing portion of a heat pipe is disposed at a local portion of a coil portion, which is a main heat generating source in the transformer, and a heat dissipating portion of the heat pipe is disposed outside the transformer.

이러한 냉각 구조를 가진 변압기는 고온의 열을 발생시키는 코일부의 국소부위에 히트파이프의 흡열부를 배치시킴으로써, 신속하게 열을 방열시키는 것이 가능하여, 변압기의 절연/방열유를 감소시킬 수 있음과 동시에 변압기의 크기를 줄일 수 있다.The transformer having such a cooling structure can dissipate heat quickly by arranging the heat absorbing portion of the heat pipe at a local portion of the coil portion that generates high temperature heat, thereby reducing the insulation / heat radiating oil of the transformer. The size of the transformer can be reduced.

이하, 본 발명에 따른 실시예를 도 1을 참조하여 설명하면 다음과 같다.Hereinafter, an embodiment according to the present invention will be described with reference to FIG. 1.

도 1에 도시된 변압기(100)는, 변압기 본체(1) 및 이 변압기 본체(1)를 냉각 및 절연하기 위한 냉각 매체인 절연유(2)가 용기인 탱크(3) 내에 수용되어 구성되어 있다. 상기 탱크(3)는 직방체 형상 또는 원통형 형상을 이루고서 강성을 가지는 예를 들면 탄소 강판으로 형성되어 있다. 더욱이, 상기 탱크(3)의 상부에는, 헤더(4)가 경사지게 배설되어 있고, 상기 탱크(3)의 일측부에는 별도 실시예로서 판상열교환부(10)가 형성될 수도 있다.The transformer 100 shown in FIG. 1 is configured by accommodating a transformer main body 1 and an insulating oil 2 that is a cooling medium for cooling and insulating the transformer main body 1 in a tank 3 that is a container. The tank 3 is formed of, for example, a carbon steel sheet having rigidity and having a rectangular parallelepiped shape or a cylindrical shape. Furthermore, the header 4 is disposed obliquely on the upper part of the tank 3, and a plate-shaped heat exchange part 10 may be formed on one side of the tank 3 as a separate embodiment.

상기 변압기 본체(1)는, 적층 강판으로 이루어진 장방형 형상의 철심(5)의 각 측부에 1차 및 2차 코일(6, 6)이 에워싸여져 구성되고 있다. 상기 1차 및 2차 코일(6, 6)은 상기 철심(5)에 에워싸여지는 것으로 구성되어 있다. 또, 상기 1차 및 2차 코일(6, 6) 각각에서 고압층(6a)과 저압층(6b)간의 층간에는, 도 2에 도시된 바와 같이, 절연지(11)를 개입시켜 스페이서(12)가 삽입되고 있어 이것에 의해 상기 층간에 소정의 갭이 설치되어 있다. 그리고, 상기 층간의 갭내에는, 예를 들면 2개의 집열용 히트 파이프(7)의 각 하단부가 삽입되어 있다.The transformer main body 1 is formed by surrounding primary and secondary coils 6 and 6 on each side of a rectangular iron core 5 made of laminated steel sheets. The primary and secondary coils 6, 6 are configured to be surrounded by the iron core 5. In addition, between the high pressure layer 6a and the low pressure layer 6b in each of the primary and secondary coils 6 and 6, as shown in FIG. 2, the spacer 12 is interposed through the insulating paper 11. Is inserted, whereby a predetermined gap is provided between the layers. In the gap between the layers, for example, lower ends of two heat collecting heat pipes 7 are inserted.

즉, 본 실시예에 대해서는, 상기 집열용 히트 파이프(7) 중 코일(6)내에 삽입된 하단부가 흡열부(7a)로서 기능한다. 이 경우, 2개의 집열용 히트 파이프(7)의 각 흡열부(7a)는, 코일(6) 내의 다른 부위, 예를 들면, 장방형 철심(5)의 모서리부에 인접한 부위에 삽입되어 있다. 이때, 상기 집열용 히트 파이프(7)의 흡열부(7a)는, 절연지를 개입시켜 상기 코일(6)에 밀착하도록 상기 코일(6)의 고압층과 저압층과의 층들 사이 내에 삽입되어 있다.That is, in the present embodiment, the lower end portion inserted into the coil 6 of the heat collecting heat pipe 7 functions as the heat absorbing portion 7a. In this case, each heat absorbing portion 7a of the two heat collecting heat pipes 7 is inserted into another portion in the coil 6, for example, a portion adjacent to the corner portion of the rectangular iron core 5. At this time, the heat absorbing portion 7a of the heat collecting heat pipe 7 is inserted between the high pressure layer and the low pressure layer of the coil 6 so as to be in close contact with the coil 6 via insulating paper.

또, 각 집열용 히트 파이프(7)로서 상기 탱크(3)의 상부를 각각 관통하여서 노출되어 있는 상단부(7b)는 외주면에 방열핀이 구비되어 경사하여 뻗어 있는 방열 용 히터 파이프 헤더(4)에 유통하게 접속되어 있다. 상기 헤더(4)는 별도 실시예로서 상기 판상열교환부(10)에 유통가능하게 접속되어 있고, 그리고 이 판상열교환부(10)는 상기 히트 파이프(7)의 흡열부(7a) 하단부에 유통가능하게 접속되어 있다.In addition, the upper end portion 7b exposed through the upper portion of the tank 3 as the heat collecting heat pipes 7 respectively is distributed to the heat radiating heater pipe header 4 which is inclined to extend on the outer circumferential surface thereof. Is connected. The header 4 is in a separate embodiment connected to the plate heat exchanger 10 so as to be circulated, and the plate heat exchanger 10 can be circulated at the lower end of the heat absorbing portion 7a of the heat pipe 7. Is connected.

또, 본 실시예에 대해서는, 상기 집열용 히트 파이프(7) 및 상기 방열용 히트 파이프 헤더(4) 및 판상열교환부(10)의 내부에는, 모두, 염소를 포함하지 않고, 오존층을 파괴하지 않는 대체 냉매로서 개발된 작동액이 봉입되어 있다.In the present embodiment, all of the heat collecting heat pipe 7, the heat dissipating heat pipe header 4, and the plate heat exchanger 10 do not contain chlorine and do not destroy the ozone layer. A working fluid developed as an alternative refrigerant is enclosed.

본 실시예의 변압기에서, 코일(6)과 탱크(3)간의 온도차는 수십℃이상 존재하고, 흡열부로부터 방열부까지의 거리는 수십 cm로 설정되어 있다. 따라서, 코일(6)에서 발생한 열은 집열용 히트 파이프(7)의 흡열부(7a)에 전달된 후, 작동액의 축방향 유동에 의해 방열부(7b)로 향해 수송된다. 또, 집열용 히트 파이프(7)의 방열부(7b)에 수송된 열은, 방열용 히트 파이프 헤더(8)에 전달된 후, 여기서 열교환될 수 있다. 또한, 별도 실시예의 변압기는 상기 헤더(8)에서 1차 열교환된 냉매를 판상열교환부(10)로 향해 수송시킬 수 있다. 그리고 상기 판상열교환부(10)에 유입된 열은 재차 외부공기에 의해 열교환된 후 액으로서 상기 흡열부(7a)로 복귀된다.In the transformer of this embodiment, the temperature difference between the coil 6 and the tank 3 exists in the order of several tens of degrees Celsius or more, and the distance from the heat absorbing part to the heat radiating part is set to several tens of cm. Therefore, the heat generated in the coil 6 is transferred to the heat absorbing portion 7a of the heat collecting heat pipe 7 and then transported toward the heat radiating portion 7b by the axial flow of the working liquid. In addition, heat transferred to the heat dissipation portion 7b of the heat collecting heat pipe 7 may be transferred to the heat dissipation heat pipe header 8 and then heat-exchanged here. In addition, the transformer of a separate embodiment may transport the refrigerant heat exchanged in the header 8 toward the plate heat exchange unit 10. The heat introduced into the plate heat exchanger 10 is returned to the heat absorbing portion 7a as a liquid after being heat exchanged again by external air.

도 1은 본 발명에 따른 변압기의 냉각구조를 도시한 정면도,1 is a front view showing a cooling structure of a transformer according to the present invention,

도 2는 도 1의 변압기 본체의 A-A선에 따른 단면도.2 is a cross-sectional view taken along line A-A of the transformer body of FIG.

Claims (3)

변압기 본체(1) 및 이 변압기 본체(1)를 냉각 및 절연하기 위한 냉각 매체인 절연유(2)가 용기인 탱크(3) 내에 수용되어 구성되어 있는 변압기에 있어서, In the transformer in which the transformer main body 1 and the insulating oil 2 which is a cooling medium for cooling and insulating this transformer main body 1 are accommodated in the tank 3 which is a container, Comprising: 상기 탱크(3)의 상부에는, 헤더(4)가 배설되어 있고, The header 4 is arrange | positioned at the upper part of the said tank 3, 상기 변압기 본체(1)는, 적층 강판으로 이루어진 장방형 형상의 철심(5)의 각 측부에 1차 및 2차 코일(6, 6)이 감겨져 구성되고 있고,The transformer body 1 is configured by winding primary and secondary coils 6 and 6 on each side of a rectangular iron core 5 made of laminated steel sheets, 상기 1차 및 2차 코일(6, 6) 각각에서 고압층(6a)과 저압층(6b)간의 층간에는, 절연지(11)를 개입시켜 스페이서(12)가 삽입되어 상기 층간에 소정의 갭이 설치되어 있고,In each of the primary and secondary coils 6 and 6 between the high pressure layer 6a and the low pressure layer 6b, a spacer 12 is inserted through the insulating paper 11 so that a predetermined gap is formed between the layers. Installed, 상기 층간의 갭내에는, 집열용 히트 파이프(7)의 하단부가 삽입되어 있으며,In the gap between the layers, the lower end of the heat collecting heat pipe 7 is inserted, 상기 탱크(3)의 상부를 관통하여서 노출되어 있는 상기 집열용 히트 파이프(7)의 상단부(7b)는 외주면에 방열핀이 구비되어 경사하여 뻗어 있는 방열용 히터 파이프 헤더(4)에 유통하게 접속되어 있는 것을 특징으로 하는 냉각성능이 향상된 변압기.The upper end portion 7b of the heat collecting heat pipe 7 exposed through the upper portion of the tank 3 is connected to the heat dissipation heater pipe header 4 which is inclined and extends with a heat dissipation fin provided on an outer circumferential surface thereof. The transformer has an improved cooling performance. 제 1항에 있어서,The method of claim 1, 상기 집열용 히트 파이프(7) 중 코일(6)내에 삽입된 하단부인 흡열부(7a)는, 코일(6) 내의 장방형 철심(5)의 모서리부에 인접한 부위에 삽입되되, 절연지를 개입시켜 상기 코일(6)에 밀착하도록 상기 코일(6)의 고압층과 저압층과의 층들 사이 내에 삽입되어 있는 것을 특징으로 하는 냉각성능이 향상된 변압기.The heat absorbing portion 7a, which is a lower end portion of the heat collecting heat pipe 7 inserted into the coil 6, is inserted into a portion adjacent to a corner of the rectangular iron core 5 in the coil 6, and is interposed with insulating paper. Transformer with improved cooling performance, characterized in that it is inserted between the layers of the high pressure layer and the low pressure layer of the coil (6) in close contact with the coil (6). 제 1항 또는 제 2항에 있어서,The method according to claim 1 or 2, 상기 탱크(3)의 일측부에는 판상열교환부(10)가 형성되어 있고,One side of the tank 3 is formed with a plate heat exchanger 10, 상기 헤더(4)는 상기 판상열교환부(10)에 유통가능하게 접속되어 있고, 그리고 The header 4 is connected to the plate heat exchanger 10 so as to be circulated. 이 판상열교환부(10)는 상기 히트 파이프(7)의 흡열부(7a) 하단부에 유통가능하게 접속되어 있는 것을 특징으로 하는 냉각성능이 향상된 변압기.The plate heat exchange unit (10) is a transformer having improved cooling performance, characterized in that connected to the lower end of the heat absorbing portion (7a) of the heat pipe (7).
KR1020070079500A 2007-08-08 2007-08-08 Cooling efficiency improved transformer KR100874480B1 (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100948640B1 (en) * 2009-02-11 2010-03-24 (주)정원전기시스템 A cooling device of transformer for electric railway
KR101047015B1 (en) 2009-03-09 2011-07-06 김순태 Transformer with Heat Dissipation Expansion Radiator
KR101082872B1 (en) 2011-09-09 2011-11-11 주식회사 배산엔지니어링 Cooling device of dry transformer for electric rail-road
KR101089366B1 (en) 2008-12-29 2011-12-02 주식회사 효성 radiation device for transformer
KR101180018B1 (en) * 2009-06-24 2012-09-05 오석환 Transformer having heat pipe
KR20140005067A (en) * 2012-07-04 2014-01-14 엘에스산전 주식회사 Oil filled transformer with insulating means
CN105387743A (en) * 2015-12-07 2016-03-09 汪沛 Novel device adopting built-in superconducting parts and heating/refrigerating method
CN108565096A (en) * 2018-05-04 2018-09-21 江苏宝亨新电气有限公司 A kind of band heat pipe transformer device structure with superregulated property
CN116798742A (en) * 2023-08-01 2023-09-22 广东佰昌能源科技有限公司 Transformer heat abstractor

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KR20030062519A (en) 2002-01-17 2003-07-28 정기영 Cooling system for transformer
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KR20030062519A (en) 2002-01-17 2003-07-28 정기영 Cooling system for transformer
KR20040087300A (en) 2004-09-06 2004-10-13 두석열 Transformer radiator

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101089366B1 (en) 2008-12-29 2011-12-02 주식회사 효성 radiation device for transformer
KR100948640B1 (en) * 2009-02-11 2010-03-24 (주)정원전기시스템 A cooling device of transformer for electric railway
KR101047015B1 (en) 2009-03-09 2011-07-06 김순태 Transformer with Heat Dissipation Expansion Radiator
KR101180018B1 (en) * 2009-06-24 2012-09-05 오석환 Transformer having heat pipe
KR101082872B1 (en) 2011-09-09 2011-11-11 주식회사 배산엔지니어링 Cooling device of dry transformer for electric rail-road
KR20140005067A (en) * 2012-07-04 2014-01-14 엘에스산전 주식회사 Oil filled transformer with insulating means
KR101635050B1 (en) 2012-07-04 2016-06-30 엘에스산전 주식회사 Oil filled transformer with insulating means
CN105387743A (en) * 2015-12-07 2016-03-09 汪沛 Novel device adopting built-in superconducting parts and heating/refrigerating method
CN108565096A (en) * 2018-05-04 2018-09-21 江苏宝亨新电气有限公司 A kind of band heat pipe transformer device structure with superregulated property
CN116798742A (en) * 2023-08-01 2023-09-22 广东佰昌能源科技有限公司 Transformer heat abstractor
CN116798742B (en) * 2023-08-01 2023-12-29 广东佰昌能源科技有限公司 Transformer heat abstractor

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