JPS62154708A - Gas-insulated transformer - Google Patents
Gas-insulated transformerInfo
- Publication number
- JPS62154708A JPS62154708A JP29404385A JP29404385A JPS62154708A JP S62154708 A JPS62154708 A JP S62154708A JP 29404385 A JP29404385 A JP 29404385A JP 29404385 A JP29404385 A JP 29404385A JP S62154708 A JPS62154708 A JP S62154708A
- Authority
- JP
- Japan
- Prior art keywords
- cooling medium
- liquid cooling
- tank
- clamp
- clamps
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Transformer Cooling (AREA)
Abstract
Description
【発明の詳細な説明】
[発明の技術分野]
本発明はガス絶縁変圧器に関するもので、特に機器の絶
縁を絶縁ガスによって(jい、取器の冷却は絶縁ガスと
は別の冷却媒体により行うようにしたガス絶縁変圧器に
関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a gas insulated transformer, and in particular, the invention relates to a gas insulated transformer. This article relates to a gas insulated transformer.
[発明の技術的背景とその問題点]
一般に発、変電所に於て用いられる大容量、大形の変圧
器は絶縁、冷却媒体としてタンク内に絶縁油を充てんし
た油入変圧器が用いられている。[Technical background of the invention and its problems] Generally, large-capacity, large-sized transformers used in power generation and substations are oil-immersed transformers in which a tank is filled with insulating oil as an insulating and cooling medium. ing.
しかし、この油入変圧器は万一の事故発生に際し油によ
る火災等の生ずる恐れがあり、またそれにより環境汚染
等の二次災害の発生する恐れがある。However, in the unlikely event that an accident occurs, this oil-immersed transformer may cause a fire or the like due to the oil, which may also cause secondary disasters such as environmental pollution.
また容置増大に伴い増々大形化し、設置スペースの拡大
と輸送コストの増大が問題となってきている。このため
、近年、特に都市部の地下変電所等に設置される変圧器
としては火災発生の恐れがなく安全性の高い、より小形
化したガス絶縁変圧器が採用される傾向にある。このガ
ス絶縁変圧器はタンク内に機器本体と共に絶縁油に代っ
てSFsF2ガス不燃性の絶縁ガスを充てんし、機器の
絶縁と冷却を行うようにしたものである。しかしながら
絶縁ガスの冷却能力は絶縁油のそれと比べるとはるかに
低く、従ってこのような絶縁ガスにより絶縁と冷却の両
方を兼ねるガス絶縁変圧器においては冷却効果の悪さか
ら高々致方kVAの比較的小容量の変圧器にしか実施で
きなかった。このため、ガス絶縁変圧器としての人容邑
化を計るためにタンク内の機器絶縁は絶縁特性のよい絶
縁ガスで行い、機器の冷却はフロン(C2Cj!a F
3 )や70リナート(Os Ft s O)等の絶縁
特性のよい液体を霧状にして谷線、鉄心、クランプ等の
機器本体に吹きかける手段を講じた変圧器が考えられて
いる。しかしながら変圧器の構造体として鉄心を締付け
るクランプは強度上鉄製であり、巻線もれ磁束が入射す
ると局部加熱が発生し、従って冷却媒体を霧状にしてク
ランプに吹きかけるだけでは充分な冷却効果が得られず
、またクランプ全体にまんべんなく冷却媒体を吹きかけ
るには多数のノズル等の設備を用意しなくてはならず構
造が複雑で高価となる欠点があった。In addition, as the storage capacity increases, the size of the equipment increases, resulting in problems such as expansion of installation space and increased transportation costs. For this reason, in recent years, there has been a tendency to use smaller gas-insulated transformers, which are highly safe and free from the risk of fire, as transformers installed in underground substations and the like, especially in urban areas. This gas insulated transformer has a tank filled with a nonflammable insulating gas such as SFsF2 gas instead of insulating oil together with the main body of the equipment to insulate and cool the equipment. However, the cooling capacity of insulating gas is much lower than that of insulating oil, and therefore, in gas-insulated transformers that use insulating gas for both insulation and cooling, the cooling effect is poor, so at most the resulting kVA is relatively small. This could only be done for large capacity transformers. For this reason, in order to make the gas-insulated transformer more human-friendly, the equipment inside the tank is insulated using an insulating gas with good insulation properties, and the equipment is cooled using fluorocarbons (C2Cj!a F).
A transformer is being considered in which a liquid with good insulating properties such as 3) or 70 linat (Os Ft s O) is atomized and sprayed onto the main body of the device, such as the valley wire, iron core, and clamp. However, the clamps that tighten the core of the transformer are made of iron for strength reasons, and local heating occurs when the leakage magnetic flux from the windings enters.Therefore, simply spraying a mist of cooling medium onto the clamps does not provide a sufficient cooling effect. Moreover, in order to spray the cooling medium evenly over the entire clamp, it is necessary to prepare equipment such as a large number of nozzles, which has the drawback of making the structure complicated and expensive.
[発明の目的コ
本発明は以上の点に鑑みて、冷却効果、特にクランプ部
分の冷却効果が高く小形で、構造が簡単なガス絶縁変圧
器を提供することを目的とする。[Object of the Invention] In view of the above points, an object of the present invention is to provide a gas insulated transformer that has a high cooling effect, particularly a cooling effect of the clamp portion, is small, and has a simple structure.
[発明の概要]
本発明は以上の目的を達成するために鉄心を締付けるク
ランプを中空状とし、このクランプ内にタンク外部より
液状冷却媒体を送り込むことによりクランプを内面から
均一かつ効果的に冷却すると共に、このクランプ内に貯
った液状冷却媒体をオーバフローさせ、これによりタン
ク底部の貯った液状冷却媒体をタンク外部の冷却器に循
環させるようにしたことを特徴とする。[Summary of the Invention] In order to achieve the above objects, the present invention makes the clamp for tightening the iron core hollow, and cools the clamp uniformly and effectively from the inside by feeding a liquid cooling medium into the clamp from outside the tank. In addition, the liquid cooling medium stored in the clamp is caused to overflow, thereby circulating the liquid cooling medium stored at the bottom of the tank to a cooler outside the tank.
[発明の実施例]
以下、本発明の一実施例を図面を参照して説明する。図
において、1は変圧器のタンクで内部に鉄心2及びこれ
に巻回される巻線3から成る変圧器中身を収納し、この
タンク1内にはSF6ガス等の絶縁ガス4が規定の圧力
で封入されている。[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a transformer tank, which houses the contents of the transformer consisting of an iron core 2 and a winding 3 wound around it. It is enclosed in.
5a、5b及び6a、6bは夫々鉄製の上、下クランプ
で、鉄心2をその両側から積層方向に締付ける。この上
、下のクランプ5a、5b及び5a。5a, 5b and 6a, 6b are upper and lower iron clamps, respectively, which clamp the iron core 2 from both sides in the stacking direction. Upper and lower clamps 5a, 5b and 5a.
6bは図示のとおり内部に空間を有するような断面矩形
の中空箱状に形成されている。7は冷却器であり、タン
ク1の外部に設けられ配管8a、8bを介してタンク1
内と連通しており、上部の配管8aは鉄心2の上部まで
延び、更に細い配管9a。As shown in the figure, 6b is formed in the shape of a hollow box with a rectangular cross section and a space inside. 7 is a cooler, which is installed outside the tank 1 and is connected to the tank 1 via piping 8a, 8b.
The upper piping 8a extends to the upper part of the iron core 2, and an even thinner piping 9a.
9bを介して上部のクランプ5a、5bの空間と連通し
ている。更に上部の配管8aは細い配管10を介して下
部のクランプ6a、6bの空間と連通している。一方、
下部配管8bの一端はタンク1の下端部と連通し、その
他端はポンプ11を介して冷却器7に接続されている。It communicates with the space between the upper clamps 5a and 5b via 9b. Further, the upper pipe 8a communicates with the space between the lower clamps 6a and 6b via a thin pipe 10. on the other hand,
One end of the lower pipe 8b communicates with the lower end of the tank 1, and the other end is connected to the cooler 7 via a pump 11.
そして冷却器7からは前記配管8a 、9a 、9b並
びに10を介して上、下のクランプ5a 、5b及び5
a、5b内の空間にフロン(C2CJls F3 )や
フロリナート(C8Ft s O)等絶縁特性のよい液
状冷却媒体12が送られ、クランプ5a、5b及び5a
。From the cooler 7, upper and lower clamps 5a, 5b and 5 are connected via the pipes 8a, 9a, 9b and 10.
A liquid cooling medium 12 with good insulating properties, such as Freon (C2CJlsF3) or Fluorinert (C8FtsO), is sent to the spaces in the clamps 5a, 5b, and 5a.
.
6b内に送られた液状冷却媒体12は夫々排出管13a
、13b、及び14a、14bよりオーバフローしてタ
ンク1の底部に貯るようになっている。The liquid cooling medium 12 sent into 6b is discharged through each discharge pipe 13a.
, 13b, and 14a, 14b and is stored at the bottom of the tank 1.
次に本発明の作用について説明する。変圧器中身及びこ
れとタンク1との絶縁はタンク1内に封入された絶縁ガ
ス4により所定の絶縁強度が保たれるように確保されて
いる。一方ポンブ11により上部配管8aを通ってタン
ク1内に送られた液状冷却媒体12は配管9a 、9b
並びに10を通って上、下のクランプ5a 、5b及び
6a、6b内に送り込まれる。ここで液状冷却媒体12
によりクランプ5a、5b、5a、5bは冷却されると
共にこのクランプ5a、5b、6a、6b内に貯った液
状冷却媒体12は排出管13a、13b並びに14a、
14bよりオーバフローしてタンク1の底部に貯められ
る。タンク1の底部に貯められた液状冷却媒体12はポ
ンプ11により下部配管8bを通って冷却器7に送り込
まれ、ここで冷却されて再び前記と同様に上部配管8a
を通ってクランプ5a、5b、5a、5b内に送り込ま
れるという循環をくり返す。これにより上、下のクラン
プ5a、5b、 6a、(3bは中空内部より液状冷却
媒体12により均等かつ効果的に冷却される。Next, the operation of the present invention will be explained. Insulation between the contents of the transformer and the tank 1 is ensured by an insulating gas 4 sealed in the tank 1 so that a predetermined insulation strength is maintained. On the other hand, the liquid cooling medium 12 sent into the tank 1 through the upper pipe 8a by the pump 11 is transferred to the pipes 9a and 9b.
and 10 into the upper and lower clamps 5a, 5b and 6a, 6b. Here, liquid cooling medium 12
The clamps 5a, 5b, 5a, 5b are cooled, and the liquid cooling medium 12 stored in the clamps 5a, 5b, 6a, 6b is discharged through the discharge pipes 13a, 13b and 14a,
It overflows from 14b and is stored at the bottom of tank 1. The liquid cooling medium 12 stored at the bottom of the tank 1 is sent to the cooler 7 through the lower pipe 8b by the pump 11, cooled there, and then transferred to the upper pipe 8a again in the same manner as above.
The cycle of being fed through the clamps 5a, 5b, 5a, and 5b is repeated. As a result, the upper and lower clamps 5a, 5b, 6a, (3b) are evenly and effectively cooled from the hollow interior by the liquid cooling medium 12.
なお、図示していないが鉄心2、コイル3、あるいはタ
ンク1の局部加熱等は従来と同様に液状冷却媒体12を
上部より吹きかけることにより冷却が行われる。Although not shown, local heating of the iron core 2, coil 3, or tank 1 is cooled by spraying liquid cooling medium 12 from above, as in the conventional case.
このような構成にすることにより本発明のガス絶縁変圧
器では巻線もれ磁束により加熱された上。With such a configuration, the gas insulated transformer of the present invention is heated by the winding leakage magnetic flux.
下のクランプ5a、5b、6a、6bを充分に冷却でき
ると共に多数のノズルにより上、下のクランプ5a、5
b、6a、6bに液状冷却媒体12を吹きかける構造に
比べはるかに簡単な構造ですむ。The lower clamps 5a, 5b, 6a, 6b can be sufficiently cooled, and the upper and lower clamps 5a, 5 can be cooled by a large number of nozzles.
The structure is much simpler than the structure in which the liquid cooling medium 12 is sprayed onto b, 6a, and 6b.
[発明の効果コ
以上のように本発明によれば鉄心を締付けるクランプを
中空状とし、このクランプ内にタンク外部より液状冷却
媒体を送り込むことにより、クランプを内面から冷却す
ると共に、このクランプ内に貯った液状冷却媒体をオー
バー7a−させ、これによりタンク底部に貯った液状冷
却媒体をタンク外部の冷却器に循環させるようにしたの
で、冷却効果、特にクランプ部分の冷却効果が高く、小
形で構造が簡単なガス絶縁変圧器を得ることができる。[Effects of the Invention] As described above, according to the present invention, the clamp for tightening the iron core is made hollow, and by feeding a liquid cooling medium into the clamp from outside the tank, the clamp is cooled from the inside and the cooling medium is cooled inside the clamp. The liquid cooling medium stored at the bottom of the tank is circulated to the cooler outside the tank by overflowing the liquid cooling medium, so the cooling effect, especially the cooling effect of the clamp part, is high and the size is small. A gas insulated transformer with a simple structure can be obtained.
図は本発明の一実施例を示す断面図である。
1・・・タンク、2・・・鉄心、3・・・巻線、4・・
・絶縁ガス、5a、5b、6a、6b 、、、クランプ
、7・・・冷却器、8 a、8 b、9 a、9 b、
10 ・・・配管、11 ・・・ポンプ、12 ・・
・液状冷却媒体、13a、13b、’l 4a、14b
・・・排出管。The figure is a sectional view showing one embodiment of the present invention. 1...tank, 2...iron core, 3...winding, 4...
・Insulating gas, 5a, 5b, 6a, 6b,... Clamp, 7... Cooler, 8 a, 8 b, 9 a, 9 b,
10...Piping, 11...Pump, 12...
・Liquid cooling medium, 13a, 13b,'l 4a, 14b
...Exhaust pipe.
Claims (1)
記鉄心を締付けるクランプとから成る変圧器中身を絶縁
ガスと共に収納し、外部よりタンク内に送り込まれた液
状冷却媒体により前記変圧器中身を冷却するようにした
ガス絶縁変圧器において、前記クランプを中空状とし、
このクランプ内に液状冷却媒体を送り込み、クランプ内
に貯められた液状冷却媒体をオーバフローさせる排出管
をクランプに設けると共に、タンク底部に貯った液状冷
却媒体をタンク外部に設けた冷却器を通して循環させる
ようにしたことを特徴とするガス絶縁変圧器。The contents of a transformer consisting of an iron core, a winding wound around the iron core, and a clamp for tightening the iron core are housed in a tank together with an insulating gas, and the transformer is heated by a liquid cooling medium fed into the tank from the outside. In a gas insulated transformer whose contents are cooled, the clamp is hollow,
A liquid cooling medium is sent into this clamp, and a discharge pipe is provided in the clamp to allow the liquid cooling medium stored in the clamp to overflow, and the liquid cooling medium stored at the bottom of the tank is circulated through a cooler installed outside the tank. A gas insulated transformer characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29404385A JPS62154708A (en) | 1985-12-27 | 1985-12-27 | Gas-insulated transformer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29404385A JPS62154708A (en) | 1985-12-27 | 1985-12-27 | Gas-insulated transformer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62154708A true JPS62154708A (en) | 1987-07-09 |
Family
ID=17802534
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP29404385A Pending JPS62154708A (en) | 1985-12-27 | 1985-12-27 | Gas-insulated transformer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62154708A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01111310A (en) * | 1987-10-26 | 1989-04-28 | Toshiba Corp | Static induction device |
CN110783069A (en) * | 2019-09-27 | 2020-02-11 | 广州市一变电气设备有限公司 | Folder with circulating water cooling function and transformer thereof |
CN111029109A (en) * | 2020-01-03 | 2020-04-17 | 广州市一变电气设备有限公司 | Transformer with external sudden short circuit impact resistance function |
-
1985
- 1985-12-27 JP JP29404385A patent/JPS62154708A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01111310A (en) * | 1987-10-26 | 1989-04-28 | Toshiba Corp | Static induction device |
CN110783069A (en) * | 2019-09-27 | 2020-02-11 | 广州市一变电气设备有限公司 | Folder with circulating water cooling function and transformer thereof |
CN111029109A (en) * | 2020-01-03 | 2020-04-17 | 广州市一变电气设备有限公司 | Transformer with external sudden short circuit impact resistance function |
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