JPH11186058A - Cooling device for stationary induction electric apparatus - Google Patents
Cooling device for stationary induction electric apparatusInfo
- Publication number
- JPH11186058A JPH11186058A JP9358031A JP35803197A JPH11186058A JP H11186058 A JPH11186058 A JP H11186058A JP 9358031 A JP9358031 A JP 9358031A JP 35803197 A JP35803197 A JP 35803197A JP H11186058 A JPH11186058 A JP H11186058A
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- Prior art keywords
- tank
- pipe
- cooling
- branch pipe
- branch
- 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.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、冷却媒体を強制的
に循環させる静止誘導電器の冷却装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for a static induction device for forcibly circulating a cooling medium.
【０００２】[0002]
【従来の技術】従来の変圧器、リアクトル等の静止誘導
電器は、複数の鉄心片を積層し、且つ両端を締付金具で
締付けた鉄心にコイルを設けた電気機器中身を収納した
タンクと冷却器との間を冷却配管で連通し、ポンプによ
り冷却媒体をタンクと冷却器との間を循環させて電気機
器中身を冷却させ、冷却媒体を強制的に流す自冷構造と
している。2. Description of the Related Art A conventional stationary induction electric device such as a transformer or a reactor is composed of a cooling tank and a cooling tank in which a plurality of iron core pieces are laminated, and both ends of which are provided with coils on an iron core which is fastened with fasteners. It has a self-cooling structure in which a cooling pipe communicates with the container and a pump circulates a cooling medium between the tank and the cooler to cool the contents of the electric equipment and force the cooling medium to flow.
【０００３】[0003]
【発明が解決しようとする課題】従来のような冷却媒体
に絶縁油やパーフルオロカーボンのような液体を使用し
ている変圧器、リアクトル等の静止誘導電器において
は、液体の冷却能力がすぐれていることにより、特に問
題が生じることはなかった。In a conventional stationary induction device such as a transformer or a reactor using a liquid such as insulating oil or perfluorocarbon as a cooling medium, the cooling capacity of the liquid is excellent. As a result, no particular problem occurred.
【０００４】近年の変圧器、リアクトル等の静止誘導電
器に対する不燃化、防爆化の要請に対し冷却媒体として
ＳＦ6ガスを使用した変圧器、リアクトル等のガス絶縁
機器が開発され、現在製品化されている。これらのガス
絶縁機器に使用されるＳＦ6ガスは、従来冷却媒体とし
て使用してきた絶縁油に対し冷却性能が劣り、単位体積
当りの熱容量を比較すると、１気圧下でのＳＦ6ガスは
絶縁の４００分の１程度しかなく、多くの場合ＳＦ6ガ
スの封入圧力を上げているが、これでも絶縁油に比べ単
位体積当りの熱容量は１００分の１程度である。In response to recent demands for non-flammable and explosion-proof stationary induction devices such as transformers and reactors, transformers and reactors using SF 6 gas as a cooling medium have been developed and are now commercialized. ing. SF 6 gas used in these gas insulating devices has inferior cooling performance to insulating oil conventionally used as a cooling medium. Comparing the heat capacity per unit volume, SF 6 gas at 1 atm. Although it is only about 1/400 and the filling pressure of SF 6 gas is increased in many cases, the heat capacity per unit volume is still about 1/100 as compared with insulating oil.
【０００５】これらガス絶縁機器において、損失の主な
発生源である巻線部についてはＳＦ6ガスをガスブロア
等を用い強制的に循環させることにより、対応は可能で
あるが、巻線部以外の損失の発生源であるタンクや鉄心
の締付金具等については、自冷構造となりＳＦ6ガスの
冷却性能より許容される発生損失が小さいため、この従
来例ではシールドを取り付けたり、或いは金属の材質を
ＳＵＳ材等に変更している。この損失を低減する対策で
も発生損失が大きすぎる場合は、損失の発生原因となる
巻線部からの漏れ磁束量を減少させるため、巻線部から
の距離を大きくとり、損失を下げるしかなく、これによ
り静止誘導電器が大幅に大きくなり問題となる。[0005] In these gas-insulated equipment, the winding part, which is a main source of loss, can be coped with by forcibly circulating SF 6 gas using a gas blower or the like. Since the loss sources, such as tanks and iron core fasteners, have a self-cooling structure and the allowable loss is smaller than the cooling performance of SF 6 gas, in this conventional example, a shield is attached, or a metal material is used. Is changed to SUS material or the like. If the generated loss is too large even if measures are taken to reduce this loss, in order to reduce the amount of magnetic flux leakage from the winding part that causes the loss, the distance from the winding part must be increased to reduce the loss. As a result, the stationary induction device becomes significantly large, which causes a problem.
【０００６】更に、冷却媒体として絶縁油等の液体を使
用している変圧器、リアクトル等の静止誘導電器におい
ても、近年のこれら静止誘導電器に対する大容量化や高
インピーダンス化の要請により、損失の発生原因である
漏れ磁束量が大きくなり、損失が大きくなることによ
り、タンクや鉄心締付金具等の温度上昇値が増加し、現
状対策では対応できない。[0006] Furthermore, in static induction devices such as transformers and reactors using a liquid such as insulating oil as a cooling medium, loss due to recent demands for large capacity and high impedance for these static induction devices. Since the amount of leakage magnetic flux, which is the cause of the occurrence, increases, and the loss increases, the temperature rise value of the tank, the iron core fastener, and the like increases, and the current countermeasures cannot cope.
【０００７】特に、磁束集中による局部過熱により、温
度上昇をし、冷却媒体が絶縁劣化を生じ、冷却媒体の寿
命が短くなったり、或いは局部過熱による冷却媒体の冷
却効率が落ち、静止誘導電器が大型化する。また冷却媒
体が絶縁劣化を生じた分解ガスによる腐食ガスで、鉄心
が腐食されて静止誘導電器の寿命が短くなる等の欠点を
生じる。この冷却媒体を気体としている静止誘導電器で
も上述と同一の問題を抱えている。尚、この種の技術と
して特開昭５６−１０１７２０号公報、特開昭５６−１
０１７２０号公報、特開昭５６−１０１７２０号公報を
挙げることができる。[0007] In particular, the temperature rises due to local overheating due to the concentration of magnetic flux, the insulation of the cooling medium is degraded, and the life of the cooling medium is shortened, or the cooling efficiency of the cooling medium due to the local overheating is reduced. Increase in size. In addition, the cooling medium is a corrosive gas due to the decomposition gas that has caused insulation deterioration, and the iron core is corroded, resulting in a drawback such as shortening the life of the stationary induction device. The static induction device using the cooling medium as a gas has the same problem as described above. Incidentally, Japanese Patent Application Laid-Open No. 56-101720 and Japanese Patent Application Laid-Open No.
01720 and JP-A-56-101720.
【０００８】本発明の目的は、局部過熱を防止して、小
型化すると共に寿命を長くした静止誘導電器の提供する
ことにある。It is an object of the present invention to provide a static induction device which prevents local overheating, is reduced in size, and has a longer life.
【０００９】[0009]
【課題を解決するための手段】本発明の請求項１による
静止誘導電器の冷却装置は、複数の鉄心片を積層し、且
つ両端を締付金具で締付けた鉄心にコイルを設けた電気
機器中身を収納したタンクと冷却器との間を配管で連通
し、ポンプにより冷却媒体をタンクと冷却器との間を循
環させて電気機器中身を冷却させるものにおいて、上記
配管の途中に少なくとも２本の分岐配管を連通し、この
分岐配管の放出口を磁束が集中する上部締付金具及びタ
ンク内面に設けることにある。According to a first aspect of the present invention, there is provided a cooling apparatus for a stationary induction electric machine, comprising: a plurality of iron core pieces laminated on each other and a coil provided on an iron core having both ends fastened by fasteners. The tank containing the container and the cooler communicate with each other by a pipe, and a cooling medium is circulated between the tank and the cooler by a pump to cool the contents of the electric device. At least two pipes are provided in the middle of the pipe. An object of the present invention is to provide a branch pipe which communicates with a branch pipe and an outlet of the branch pipe is provided on an inner surface of a tank and an upper fastener where a magnetic flux is concentrated.
【００１０】本発明の請求項２による静止誘導電器の冷
却装置は、請求項１の上記タンク内面の分岐配管の放出
口を絶縁部材で構成することにある。According to a second aspect of the present invention, there is provided a cooling device for a stationary induction electric appliance, wherein the discharge port of the branch pipe on the inner surface of the tank is constituted by an insulating member.
【００１１】本発明の請求項３による静止誘導電器の冷
却装置は、請求項１の上記配管の途中に少なくとも２本
の分岐配管を連通し、この分岐配管の放出口を磁束が集
中する上部締付金具及びタンク内面に設け、上部締付金
具側の流量をタンク内面側の流量より多くすることにあ
る。According to a third aspect of the present invention, there is provided a cooling device for a stationary induction electric appliance, wherein at least two branch pipes are communicated with each other in the middle of the pipes according to the first aspect of the present invention, and a discharge port of the branch pipe is concentrated on an upper portion where a magnetic flux is concentrated. An object of the present invention is to provide a metal fitting and an inner surface of a tank so that a flow rate of the upper fastener is larger than a flow rate of the inner surface of the tank.
【００１２】本発明の請求項４による静止誘導電器の冷
却装置は、請求項１の上記配管の途中に少なくとも２本
の分岐配管を連通し、この分岐配管の放出口を磁束が集
中する締付金具及びタンク内面に設け、締付金具側の配
管径をタンク内面側配管径より太くすることにある。According to a fourth aspect of the present invention, there is provided a cooling device for a stationary induction electric appliance, wherein at least two branch pipes are communicated with each other in the middle of the pipes, and a magnetic flux is concentrated at an outlet of the branch pipe. An object of the present invention is to provide a metal fitting and an inner surface of a tank so that a pipe diameter on the side of the fastener is larger than a pipe diameter on the inner surface of the tank.
【００１３】本発明の請求項５による静止誘導電器の冷
却装置は、複数の鉄心片を積層し、且つ両端を締付金具
で締付けた鉄心にコイルを設けた電気機器中身を収納し
たタンクと冷却器との間を配管で連通し、ポンプにより
冷却媒体をタンクと冷却器との間を循環させて電気機器
中身を冷却させるものにおいて、上記配管の途中に少な
くとも２本の分岐配管を連通し、この分岐配管の放出口
を磁束が集中する上部締付金具及びタンク内面に設け、
上部締付金具に設けた温度検出器から検出値を制御部に
入力し、制御部で検出値が基準値時及び基準値以上にな
った時に分岐配管に設けた自動弁を開閉するように自動
弁を制御することにある。According to a fifth aspect of the present invention, there is provided a cooling apparatus for a stationary induction electric appliance, comprising: a tank for storing the contents of an electric device in which a plurality of iron core pieces are laminated and a coil is provided on an iron core having both ends fastened by fasteners; And a vessel, and a cooling medium is circulated between the tank and the cooler by a pump to cool the contents of the electric device. At least two branch pipes are communicated in the middle of the pipe, The outlet of this branch pipe is provided on the upper clamp and the tank inner surface where the magnetic flux is concentrated,
The detected value is input to the control unit from the temperature detector provided in the upper clamp, and the control unit automatically opens and closes the automatic valve provided in the branch pipe when the detected value is at or above the reference value. Control of the valve.
【００１４】[0014]
【発明の実施の形態】以下、本発明の実施例を図１ない
し図５により説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
【００１５】図１は本発明の一実施例に係る冷却媒体を
強制的に循環させている変圧器を示す概略構成図であ
る。図１において、１は変圧器のタンク１で、このタン
ク１内には、冷却媒体２、変圧器鉄心３および変圧器巻
線４が収納されており、このタンク１内で発生する損失
を、冷却配管７及び１０と冷却器８を通り、ガスブロア
又はポンプ９で、冷却媒体２を強制的に循環させること
により冷却し、抑えるシステムになっている。FIG. 1 is a schematic diagram showing a transformer for forcibly circulating a cooling medium according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a transformer tank 1, in which a cooling medium 2, a transformer core 3, and a transformer winding 4 are housed. The cooling medium 2 is cooled and suppressed by forcibly circulating the cooling medium 2 with the gas blower or the pump 9 through the cooling pipes 7 and 10 and the cooler 8.
【００１６】そして、本実施例では、変圧器下部の冷却
配管１０を、分岐配管１１及び１２に分岐し、分岐配管
１１及び１２は、タンク１の上部で、タンク１内部へ導
入される。分岐配管１１は、図１のＡ−Ａ断面である図
２に示す概略構成図における上部締付金具６に取り付け
た冷却媒体の吹出口１６に連通している。これと同様に
分岐配管１２は、図２のタンク１に取り付けた冷却媒体
２の吹出口１７に連通している。ここで特に図示しては
いないが、タンク１の内部に設置される分岐配管１１及
び１２と、冷却媒体の吹出口１６及び１７の一部又は全
部は絶縁物を使用するものとする。特に吹出口１７は絶
縁物部材を使用すれば、磁束Φ2により悪影響例えば渦
電流による過熱を防止できる。In this embodiment, the cooling pipe 10 below the transformer is branched into branch pipes 11 and 12, and the branch pipes 11 and 12 are introduced into the tank 1 above the tank 1. The branch pipe 11 communicates with a cooling medium outlet 16 attached to the upper fastening member 6 in the schematic configuration diagram shown in FIG. 2 which is a cross section taken along the line AA in FIG. Similarly, the branch pipe 12 communicates with the outlet 17 of the cooling medium 2 attached to the tank 1 in FIG. Here, although not particularly shown, the branch pipes 11 and 12 installed inside the tank 1 and some or all of the cooling medium outlets 16 and 17 use an insulator. In particular, if the outlet 17 uses an insulating member, the magnetic flux Φ 2 can prevent adverse effects such as overheating due to eddy current.
【００１７】これらの分岐配管１１，１２をタンク１に
取り付ける場合を図３，図４により説明するが、両分岐
配管１１，１２の構造は同じなので、分岐配管１１によ
り説明する。タンク１に貫通穴を開け、貫通穴の周囲の
タンク１の内面側及び外面側にフランジ１Ａ，１Ｂを取
り付ける。このフランジ１Ａ，１Ｂに対応するフランジ
１Ｃ，１Ｄを当接し、ボルト・ナット１Ｅにより締め付
けて、分岐配管１１をタンク１に支持している。分岐配
管１１の先端には各フランジ１Ｃ，１Ｄを装着してい
る。The case where these branch pipes 11 and 12 are attached to the tank 1 will be described with reference to FIGS. 3 and 4. Since the structures of both branch pipes 11 and 12 are the same, the description will be made with reference to the branch pipe 11. A through hole is made in the tank 1, and flanges 1A and 1B are attached to the inner surface and the outer surface of the tank 1 around the through hole. The flanges 1C and 1D corresponding to the flanges 1A and 1B are brought into contact with each other and tightened by bolts and nuts 1E to support the branch pipe 11 on the tank 1. Each of the flanges 1C and 1D is attached to the tip of the branch pipe 11.
【００１８】また吹出口１７は図４のようにタンク１の
内面側にフランジ１Ｆを取り付け、湾曲形状の固定金具
１Ｇで吹出口１７を包囲し、固定金具１Ｇ及びフランジ
１Ｆにネジ１Ｈを挿入して固定する。As shown in FIG. 4, a flange 1F is attached to the inner surface side of the tank 1 as shown in FIG. 4, and the outlet 17 is surrounded by a curved fixture 1G. A screw 1H is inserted into the fixture 1G and the flange 1F. And fix it.
【００１９】そして、吹出口１６及び１７を上部締付金
具６及びタンク１の内面に取り付けた理由を図５により
説明する。即ち、図５に示すように変圧器巻線４から発
生する磁束Φ1は矢印で示すように、変圧器巻線４から
上部締付金具６及び変圧器鉄心３を透過し、再び下部締
付金具６から変圧器巻線４に循環する磁路である。また
磁束Φ2は矢印で示すように、変圧器巻線４からタンク
１内を透過し、再び変圧器巻線４に循環する磁路であ
る。The reason why the outlets 16 and 17 are attached to the upper fastener 6 and the inner surface of the tank 1 will be described with reference to FIG. That is, the magnetic flux Φ 1 generated from the transformer winding 4 as shown in FIG. 5 penetrates through the upper clamp 6 and the transformer core 3 from the transformer winding 4 as indicated by the arrow, and is again clamped to the lower portion. The magnetic path circulates from the metal fitting 6 to the transformer winding 4. The magnetic flux Φ 2 is a magnetic path which penetrates through the tank 1 from the transformer winding 4 and circulates again to the transformer winding 4 as shown by the arrow.
【００２０】前者の磁路（磁束Φ1）では上部締付金具
６と下部締付金具６には磁束Φ1が集中するが、下部締
付金具６は直接冷却配管１０により冷却されるので、温
度上昇は生じにくいが、上部締付金具６では磁束が集中
し、局部過熱部２１を生じる。また後者の磁路では磁束
Φ2が変圧器巻線４から最初に照射するタンク１で局部
過熱部２２を生じる。温度上昇は局部過熱部２１の方が
局部過熱部２２より高い。このため本発明では吹出口１
６，１７より冷却媒体２を上部締付金具６及びタンク１
に吹付けて、温度上昇を抑えている。In the former magnetic path (magnetic flux Φ 1 ), the magnetic flux Φ 1 is concentrated on the upper clamp 6 and the lower clamp 6, but the lower clamp 6 is directly cooled by the cooling pipe 10. Although a temperature rise is unlikely to occur, the magnetic flux concentrates in the upper fastener 6, and a local overheating portion 21 is generated. In the latter magnetic path, a magnetic flux Φ 2 causes a local superheated portion 22 in the tank 1 to which the transformer winding 4 first irradiates. The temperature rise is higher in the local superheater 21 than in the local superheater 22. Therefore, in the present invention, the outlet 1
6 and 17, the cooling medium 2 is supplied to the upper clamp 6 and the tank 1
To suppress the temperature rise.
【００２１】この結果、吹出口１６を設けない場合に比
べて、本発明では冷却媒体２が絶縁劣化が生じにくくな
り、冷却媒体２の寿命が長くなったばかりか、また分解
ガスによる腐食ガスが少なくなり、変圧器鉄心３が腐食
されにくくなり、静止誘導電器の寿命を長くすることが
出来る。更に冷却媒体２を強制的に吹き付け、冷却媒体
２の冷却効率を大きく高めることにより、局部過熱を抑
えることができ、変圧器を小さくすることが可能となっ
た。特に、上部締付金具６及び上部タンク１に吹出口１
６，１７を設ければ、変圧器は運転中の磁気振動に応じ
て上部締付金具６も振動するので、吹出口１６からの冷
却媒体２は四方に分散されて、冷却効率が良くなる。As a result, as compared with the case where the air outlet 16 is not provided, in the present invention, the deterioration of the insulation of the cooling medium 2 is less likely to occur, not only the life of the cooling medium 2 is prolonged, but also the corrosive gas due to the decomposition gas is reduced. As a result, the transformer core 3 is hardly corroded, and the life of the stationary induction device can be prolonged. Furthermore, by forcibly spraying the cooling medium 2 to greatly increase the cooling efficiency of the cooling medium 2, local overheating can be suppressed, and the transformer can be reduced in size. In particular, the outlet 1 is connected to the upper fastener 6 and the upper tank 1.
When the transformers 6 and 17 are provided, the upper clamp 6 also vibrates in response to the magnetic vibration during the operation, so that the cooling medium 2 from the outlet 16 is dispersed in four directions, and the cooling efficiency is improved.
【００２２】本発明では、冷却配管１０内の冷却媒体２
の温度と、冷却配管７内の冷却媒体２の温度に大きな差
を生じやすい、ＳＦ6ガスを代表とする冷却媒体２を気
体としている変圧器、リアクトル等の静止誘導電器に対
し、特に有効であるが、冷却媒体を液体としている変圧
器、リアクトル等の静止誘導電器において、自然冷却で
は対応できない局部過熱部２１及び２２のような部位の
冷却に対しても、十分有効である。In the present invention, the cooling medium 2 in the cooling pipe 10 is
This is particularly effective for stationary induction devices such as transformers and reactors in which the cooling medium 2 typified by SF 6 gas is a gas, in which a large difference easily occurs between the temperature of the cooling medium 2 in the cooling pipe 7 and the temperature of the cooling medium 2 in the cooling pipe 7. However, in a static induction device such as a transformer or a reactor using a liquid as a cooling medium, the present invention is sufficiently effective for cooling a portion such as the local superheated portions 21 and 22 which cannot be handled by natural cooling.
【００２３】図２に示さように局部過熱部２１及び２２
は一例であり、上部締付金具６の他の部位や、タンク１
の他の部位に発生する局部過熱部、更にはタンク１内に
収納される他の構造物に発生する局部過熱部の冷却に対
しても、分岐配管１１及び１２の他に、冷却配管１０か
らの分岐配管を必要数だけ増やしたり、又分岐配管１１
及び１２につながる冷却媒体の吹出口１６及び１７の他
に、冷却媒体の吹出口を必要数だけ増やし、分岐配管１
１及び１２に複数個の冷却媒体の吹出口を取り付けるこ
とにより対応しも同様の効果を得ることができる。As shown in FIG. 2, the local heating sections 21 and 22
Is an example, and other parts of the upper fastener 6 and the tank 1
In addition to the branch pipes 11 and 12, the cooling pipe 10 also cools the local superheated part generated in other parts of the tank and further the local superheated part generated in other structures housed in the tank 1. To the required number of branch pipes,
In addition to the cooling medium outlets 16 and 17 connected to the cooling pipes 12 and 12, the number of cooling medium
By attaching a plurality of cooling medium outlets to 1 and 12, the same effect can be obtained.
【００２４】更に本発明は分岐配管１１及び１２が、タ
ンク１の外部にあることにより、分岐配管１１及び１２
と冷却配管１０にそれぞれ、流量調整用バルブ１３、１
４及び１５を取り付けることにより、変圧器巻線４と局
部過熱部２１及び２２の温度上昇値を試験等により確認
した段階で、各々の部位に必要な冷却媒体の流量を求
め、これら流量調整用バルブ１３、１４及び１５により
冷却媒体の流量を調整し、バランスのとれた冷却設計と
することができ、かつガスブロア又はポンプ９の性能を
低減することが可能となり、より小さな安い電気機器を
供給できる。Further, according to the present invention, since the branch pipes 11 and 12 are provided outside the tank 1, the branch pipes 11 and 12 are provided.
And the cooling pipe 10 are provided with flow control valves 13, 1
At the stage where the temperature rise values of the transformer winding 4 and the local superheated parts 21 and 22 are confirmed by a test or the like by attaching the transformers 4 and 15, the flow rate of the cooling medium required for each part is obtained, and these The valves 13, 14, and 15 regulate the flow rate of the cooling medium, and can provide a well-balanced cooling design, reduce the performance of the gas blower or the pump 9, and supply smaller and cheaper electric equipment. .
【００２５】更に本発明では、図５，図６に示すよう
に、温度上昇が一番ある局部過熱部２１個所の上部締付
金具６に温度検出器２５例えばサーモスタットを設け、
温度検出器２５からの温度検出値を制御部２６に入力
し、制御部２６では温度検出値が正常値（例えば１００
℃）か異常値（例えば１１０℃以上）かを判断して、異
常値時には第１リレー２７を閉じて、このＡ接点２７Ａ
を閉じ、第２リレー２８を励磁し、流量調整用バルブ１
５たとえば電磁バルブを励磁し、電磁弁１５Ａを開いて
矢印方向に冷却媒体２を流して、自動的に吹出口１６か
ら冷却媒体２を四方に分散させて、冷却する。Further, according to the present invention, as shown in FIGS. 5 and 6, a temperature detector 25, for example, a thermostat is provided on the upper clamp 6 at the 21 locally heated portion where the temperature rises most.
The detected temperature value from the temperature detector 25 is input to the control unit 26, and the control unit 26 determines that the detected temperature value is a normal value (for example, 100
° C) or an abnormal value (for example, 110 ° C or more), and in the event of an abnormal value, the first relay 27 is closed and this A contact 27A
Is closed, the second relay 28 is excited, and the flow control valve 1 is closed.
5 For example, the electromagnetic valve is excited, the electromagnetic valve 15A is opened, the cooling medium 2 flows in the direction of the arrow, and the cooling medium 2 is automatically dispersed from the air outlet 16 in all directions and cooled.
【００２６】また正常値時の温度検出回路の動作は上述
とは逆に第１リレー２７及び第２リレー２８は開放され
て、無励磁となり、電磁弁１５Ａを閉じている。尚、流
量調整用バルブ１５について説明したが、流量調整用バ
ルブ１４は流量調整用バルブ１５と同様な働きをするこ
とは云うまでもない。On the other hand, the operation of the temperature detection circuit at the time of the normal value is opposite to that described above, in which the first relay 27 and the second relay 28 are opened to be de-energized, and the solenoid valve 15A is closed. Although the flow control valve 15 has been described, it goes without saying that the flow control valve 14 functions similarly to the flow control valve 15.
【００２７】このため、通常時は冷却媒体２は分岐配管
１１及び１２に流れず、その分、冷却媒体２の使用量は
少なくなり、冷却媒体２が絶縁劣化しにくくなり、上述
と同様な効果を達成できる。また温度上昇が一番ある局
部過熱部２１の個所の分岐配管１２の径は分岐配管１１
の径より太くして、冷却媒体２の流量を多くして、冷却
を良くすることが出来る。For this reason, the cooling medium 2 does not normally flow into the branch pipes 11 and 12, and the amount of the cooling medium 2 used is reduced accordingly, and the insulation of the cooling medium 2 is hardly deteriorated. Can be achieved. The diameter of the branch pipe 12 at the location of the local superheater 21 where the temperature rises the most is the branch pipe 11
And the flow rate of the cooling medium 2 can be increased to improve the cooling.
【００２８】[0028]
【発明の効果】以上説明したように、本発明によれば、
上部締付金具及びタンクにタンクと冷却部を結ぶ配管の
途中から分岐された分岐配管の吹出口を設けたので、設
けない場合に比べて、冷却媒体の絶縁劣化が生じにくく
なり、冷却媒体の寿命が長くなったばかりか、また分解
ガスによる腐食ガスが少なくなり、変圧器鉄心が腐食さ
れにくくなり、静止誘導電器の寿命を長く出来る。更に
冷却媒体を強制的に吹き付け、冷却媒体の冷却効率を大
きく高めることにより、局部過熱を抑えることができ、
静止誘導電器を小さくすることが可能となった。特に、
上部締付金具及び上部のタンクに分岐配管の吹出口を設
ければ、変圧器は運転中の磁気振動に応じて上部締付金
具も振動するので、吹出口からの冷却媒体は四方に分散
されて、冷却効率が良くなる。As described above, according to the present invention,
The upper clamp and the tank are provided with a branch pipe outlet that branches from the middle of the pipe connecting the tank and the cooling unit. Not only the service life has been extended, but also the amount of corrosive gas due to the decomposition gas has been reduced, so that the transformer iron core is less likely to be corroded, and the service life of the stationary induction device can be extended. Furthermore, by forcibly spraying the cooling medium and greatly increasing the cooling efficiency of the cooling medium, local overheating can be suppressed,
It has become possible to reduce the static induction device. Especially,
If an outlet for branch piping is provided in the upper clamp and the upper tank, the transformer will also vibrate in response to magnetic vibration during operation, so the cooling medium from the outlet will be dispersed in all directions. Thus, the cooling efficiency is improved.
【００２９】温度上昇が一番ある局部過熱部個所の上部
締付金具に温度検出器からの温度検出値を制御部に入力
し、制御部では温度検出値が正常値（例えば１００℃）
か異常値（例えば１１０℃以上）かを判断して、電磁弁
を自動的に開いて吹出口から冷却媒体を四方に分散させ
て、冷却するようにしたので、通常時は冷却媒体は分岐
配管に流れず、その分、冷却媒体の使用量は少なくな
り、冷却媒体が絶縁劣化しにくくなった。また自動的に
電磁弁を開閉できるので、作業員がいらずコストが低減
できる。The temperature detected value from the temperature detector is input to the upper clamp of the local superheated portion where the temperature rises most, and the detected temperature value is a normal value (for example, 100 ° C.).
Or an abnormal value (for example, 110 ° C. or higher), the solenoid valve is automatically opened, and the cooling medium is dispersed from the air outlet in all directions to cool the cooling medium. Therefore, the amount of the cooling medium used was reduced and the insulation of the cooling medium was hardly deteriorated. In addition, since the solenoid valve can be automatically opened and closed, no labor is required and the cost can be reduced.
【図１】本発明の一実施例とて示した変圧器の冷却装置
の概略構成図。FIG. 1 is a schematic configuration diagram of a transformer cooling device shown as one embodiment of the present invention.
【図２】図１のＡ−Ａ線断面図。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】図１の上部タンクに分岐配管を支持した部分断
面図。FIG. 3 is a partial sectional view in which a branch pipe is supported on an upper tank of FIG. 1;
【図４】図１の上部タンクに吹出口を取り付けた部分断
面図。FIG. 4 is a partial cross-sectional view in which an outlet is attached to the upper tank of FIG. 1;
【図５】図１の磁束の磁路について説明する説明図。FIG. 5 is an explanatory diagram illustrating a magnetic path of a magnetic flux in FIG. 1;
【図６】本発明の別の実施例として示した温度検出回路
の回路図。FIG. 6 is a circuit diagram of a temperature detection circuit shown as another embodiment of the present invention.
１…変圧器タンク、２…冷却媒体、３…変圧器鉄心、４
…変圧器巻線、５…下部締付金具、６…上部締付金具、
７，１０…冷却配管、８…冷却器、９…ポンプ、１１，
１２…分岐配管、１３，１４，１５…流量調整用バル
ブ、１６，１７…吹出口、２１，２２…局部過熱部。DESCRIPTION OF SYMBOLS 1 ... Transformer tank, 2 ... Cooling medium, 3 ... Transformer core, 4
... Transformer windings, 5 ... Lower clamp, 6 ... Upper clamp,
7, 10 cooling pipe, 8 cooler, 9 pump, 11,
12 ... branch pipes, 13, 14, 15 ... flow rate adjusting valves, 16, 17 ... outlets, 21, 22 ... local superheating section.
Claims (5)
金具で締付けた鉄心にコイルを設けた電気機器中身を収
納したタンクと冷却器との間を配管で連通し、ポンプに
より冷却媒体をタンクと冷却器との間を循環させて電気
機器中身を冷却させるものにおいて、上記配管の途中に
少なくとも２本の分岐配管を連通し、この分岐配管の放
出口を磁束が集中する上部締付金具及びタンク内面に設
けることを特徴とする静止誘導電器の冷却装置。The present invention relates to a cooling device, in which a plurality of core pieces are stacked, and a coil containing a coil mounted on an iron core whose both ends are fastened with fasteners is communicated with a tank through a pipe and cooled by a pump. In a device for circulating a medium between a tank and a cooler to cool the contents of electric equipment, at least two branch pipes are communicated in the middle of the pipes, and an upper outlet where a magnetic flux is concentrated at an outlet of the branch pipes. A cooling device for a stationary induction electric appliance, wherein the cooling device is provided on a fitting and an inner surface of a tank.
縁部材で構成することを特徴とする請求項１記載の静止
誘導電器の冷却装置。2. The cooling device for a stationary induction electric device according to claim 1, wherein the discharge port of the branch pipe on the inner surface of the tank is formed of an insulating member.
配管を連通し、この分岐配管の放出口を磁束が集中する
上部締付金具及びタンク内面に設け、締付金具側の流量
をタンク内面側の流量より多くすることを特徴とする請
求項１記載の静止誘導電器の冷却装置。3. At least two branch pipes are communicated with each other in the middle of the pipe, and an outlet of the branch pipe is provided on an inner surface of an upper clamp and a tank where a magnetic flux is concentrated. 2. The cooling device for a static induction device according to claim 1, wherein the flow rate is higher than the flow rate on the side.
配管を連通し、この分岐配管の放出口を磁束が集中する
上部締付金具及びタンク内面に設け、上部締付金具側の
配管径をタンク内面側配管径より太くすることを特徴と
する請求項１記載の静止誘導電器の冷却装置。4. At least two branch pipes communicate with each other in the middle of the pipe, and the outlet of the branch pipe is provided on the inner surface of the upper clamp and the tank where the magnetic flux is concentrated. 2. The cooling device for a stationary induction electric device according to claim 1, wherein the diameter of the piping is larger than the diameter of the piping on the inner surface side of the tank.
金具で締付けた鉄心にコイルを設けた電気機器中身を収
納したタンクと冷却器との間を配管で連通し、ポンプに
より冷却媒体をタンクと冷却器との間を循環させて電気
機器中身を冷却させるものにおいて、上記配管の途中に
少なくとも２本の分岐配管を連通し、この分岐配管の放
出口を上部締付金具及びタンク内面に設け、上部締付金
具に設けた温度検出器から検出値を制御部に入力し、制
御部で検出値が基準値時及び基準値以上になった時に分
岐配管に設けた自動弁を開閉するように自動弁を制御す
ることを特徴とする静止誘導電器の冷却装置。5. A cooling system comprising: a plurality of iron core pieces laminated on each other; and a coil containing a coil mounted on an iron core having both ends fastened with fasteners. In a device for circulating a medium between a tank and a cooler to cool the contents of electric equipment, at least two branch pipes are communicated in the middle of the pipe, and a discharge port of the branch pipe is connected to an upper clamp and a tank. A detection value is input to the control unit from the temperature sensor provided on the inner surface and the upper clamp, and the control unit opens and closes the automatic valve provided in the branch pipe when the detection value is at or above the reference value A cooling device for a stationary induction machine, characterized by controlling an automatic valve so as to perform a cooling operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9358031A JPH11186058A (en) | 1997-12-25 | 1997-12-25 | Cooling device for stationary induction electric apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9358031A JPH11186058A (en) | 1997-12-25 | 1997-12-25 | Cooling device for stationary induction electric apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11186058A true JPH11186058A (en) | 1999-07-09 |
Family
ID=18457188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9358031A Pending JPH11186058A (en) | 1997-12-25 | 1997-12-25 | Cooling device for stationary induction electric apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11186058A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100572363B1 (en) * | 2002-07-24 | 2006-04-19 | 연세대학교 | DC reactor with thermal link |
| KR20160019756A (en) * | 2014-08-12 | 2016-02-22 | 엘에스산전 주식회사 | Cooling System for Power Transformer |
| CN104952589B (en) * | 2015-06-11 | 2016-08-24 | 国网山东滨州市滨城区供电公司 | A kind of transmission system temperature with high efficiency filters oil-filled transformer |
-
1997
- 1997-12-25 JP JP9358031A patent/JPH11186058A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100572363B1 (en) * | 2002-07-24 | 2006-04-19 | 연세대학교 | DC reactor with thermal link |
| KR20160019756A (en) * | 2014-08-12 | 2016-02-22 | 엘에스산전 주식회사 | Cooling System for Power Transformer |
| KR101864625B1 (en) * | 2014-08-12 | 2018-06-07 | 엘에스산전 주식회사 | Cooling System for Power Transformer |
| CN104952589B (en) * | 2015-06-11 | 2016-08-24 | 国网山东滨州市滨城区供电公司 | A kind of transmission system temperature with high efficiency filters oil-filled transformer |
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