JPH1126261A - Electric appliance - Google Patents
Electric applianceInfo
- Publication number
- JPH1126261A JPH1126261A JP9175521A JP17552197A JPH1126261A JP H1126261 A JPH1126261 A JP H1126261A JP 9175521 A JP9175521 A JP 9175521A JP 17552197 A JP17552197 A JP 17552197A JP H1126261 A JPH1126261 A JP H1126261A
- Authority
- JP
- Japan
- Prior art keywords
- enclosure
- magnetic shield
- shield
- coolant
- magnetic
- 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
- Regulation Of General Use Transformers (AREA)
- Transformer Cooling (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、大容量又は高イン
ピーダンスの変圧器及びリアクトル等の漏れ磁束の大き
な電気機器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-capacity or high-impedance transformer and an electrical device having a large leakage flux such as a reactor.
【0002】[0002]
【従来の技術】漏れ磁束の大きな電気機器において、タ
ンク等の金属の外箱への漏れ磁束の侵入による局部過熱
を防止するため金属の外箱の内側に高透磁率の磁気シー
ルドを配置し、この磁気シールドが漏れ磁束を吸収し金
属の外箱への漏れ磁束の侵入を抑制し防止している。2. Description of the Related Art In an electric device having a large leakage magnetic flux, a magnetic shield having a high magnetic permeability is arranged inside a metal outer box in order to prevent local overheating due to penetration of the leak magnetic flux into a metal outer box such as a tank. This magnetic shield absorbs the leakage flux and suppresses and prevents the penetration of the leakage flux into the metal outer box.
【0003】この磁気シールドは、磁気シールドのまわ
りに配置される固定金具により固定され、この固定金具
と磁気シールドの間は絶縁紙等をはさみ非接触としてい
る。これは金属同士を接触させた場合、振動により金属
同士が触れたり離れたりすることにより、不完全接触部
にアーク電流が生じこれにより絶縁・冷却媒体の分解ガ
スの発生が考えられるからである。[0003] The magnetic shield is fixed by a fixing member arranged around the magnetic shield, and insulating paper or the like is interposed between the fixing member and the magnetic shield so as to be in non-contact. This is because, when the metals are brought into contact with each other, the metals come into contact with or separate from each other due to vibration, thereby generating an arc current at the incompletely contacted portion, thereby generating decomposition gas of the insulating / cooling medium.
【0004】[0004]
【発明が解決しようとする課題】近年、電気機器に対す
る縮小化の強い要請があり、磁気シールドについても配
置範囲に対する制約が厳しくなりその結果、例えば磁気
シールド端部において漏れ磁束を吸収する部分が少なく
なることにより一部の磁束が磁気シールドより金属の外
箱側に漏れてしまうことが想定される。又、電力需要の
伸びにともなう電気機器の大容量化及び系統安定化装置
の要請による変圧器の高インピーダンス化により漏れ磁
束自体が大きくなる傾向にあり、磁気シールド自体の損
失の増加及び金属の外箱への漏れ磁束の増加による局部
過熱の発生が考えられる。In recent years, there has been a strong demand for miniaturization of electrical equipment, and restrictions on the arrangement range of magnetic shields have become strict. As a result, for example, there are few portions that absorb leakage magnetic flux at the end of the magnetic shield. As a result, it is assumed that a part of the magnetic flux leaks from the magnetic shield to the outer case side of the metal. In addition, the leakage flux itself tends to increase due to the increase in the capacity of electrical equipment accompanying the increase in power demand and the increase in the impedance of the transformer due to the demand for a system stabilization device. Local overheating may occur due to an increase in magnetic flux leakage into the box.
【0005】ここで磁気シールドを設置した場合、金属
の外箱の片面は磁気シールドを囲む絶縁紙と接触してい
るため冷却効果は期待できず、かつもう一方の片面は多
くの場合、空気冷却でありその冷却効果は小さく、さら
には騒音低減策として外箱をさらに囲う例もあり、この
時は空気の流れ自体も大きく制約され冷却効果がほとん
どない場合も最悪想定され、金属の外箱の局部過熱や磁
気シールドを取り囲む絶縁物の劣化が心配される。When a magnetic shield is installed, a cooling effect cannot be expected because one side of the metal outer box is in contact with insulating paper surrounding the magnetic shield, and the other side is often air-cooled. However, the cooling effect is small, and there are also cases where the outer case is further enclosed as a noise reduction measure.In this case, it is assumed that the air flow itself is greatly restricted and there is almost no cooling effect. Local overheating and deterioration of the insulator surrounding the magnetic shield may be a concern.
【0006】[0006]
【課題を解決するための手段】本発明は、磁気シールド
と金属の外箱の間に絶縁物のダクトを配置し、冷却媒体
の流れる流路を確保することを特徴とする。SUMMARY OF THE INVENTION The present invention is characterized in that an insulating duct is arranged between a magnetic shield and a metal outer box to secure a flow path for a cooling medium.
【0007】[0007]
【発明の実施の形態】以下、本発明の実施例を図面によ
り説明する。Embodiments of the present invention will be described below with reference to the drawings.
【0008】図1(a)及び(b)は従来技術における
磁気シールドの全体図及び部分図である。図2(a)及
び(b)は本発明を適用した磁気シールド構造の実施例
である。FIGS. 1A and 1B are an overall view and a partial view of a conventional magnetic shield. 2A and 2B show an embodiment of a magnetic shield structure to which the present invention is applied.
【0009】これら図1,図2において構成を説明す
る。金属の外箱1に磁気シールド2が固定金具3により
取り付けられている。この時、磁気シールドと金属の外
箱を非接触とするため絶縁紙4が磁気シールドに巻かれ
ている。ここで図2については、冷却媒体の流れる流路
6を確保するため絶縁物の冷却ダクト5が設置されてい
る。The configuration will be described with reference to FIGS. 1 and 2. A magnetic shield 2 is attached to a metal outer box 1 by a fixing bracket 3. At this time, the insulating paper 4 is wrapped around the magnetic shield to keep the magnetic shield and the metal outer box out of contact. Here, in FIG. 2, an insulating cooling duct 5 is provided to secure a flow path 6 through which a cooling medium flows.
【0010】特に金属の外箱の内側が絶縁油ないしは、
パーフルオロカーボンのように空気に比べ冷却性能が良
い冷却媒体の場合、金属の外箱の片面がこれら冷却媒体
により冷却されることにより冷却性能は、大幅に改善さ
れる。磁気シールドについても従来片面をおおっていた
絶縁物を冷却ダクトの設置によりなくすことができ、こ
れにより磁気シールド全体を冷却することが可能とな
り、磁気シールドの冷却効果も改善される。In particular, the inside of the metal outer box is made of insulating oil or
In the case of a cooling medium such as perfluorocarbon which has better cooling performance than air, the cooling performance is greatly improved by cooling one side of the metal outer box with these cooling media. With respect to the magnetic shield as well, the insulator covered on one side can be eliminated by installing a cooling duct, whereby the entire magnetic shield can be cooled and the cooling effect of the magnetic shield is improved.
【0011】[0011]
【発明の効果】これにより従来金属の外箱への漏れ磁束
をなくし、発生損失をほぼゼロとしていた設計に対し、
金属の外箱の冷却性能の向上により、適当な量の漏れ磁
束の金属の外箱への侵入が許容され、磁気シールドの使
用量を低減でき、より経済的な設計が可能となる。As a result, in contrast to the conventional design in which the leakage flux to the metal outer box is eliminated and the generated loss is almost zero,
By improving the cooling performance of the metal outer case, an appropriate amount of leakage magnetic flux can be allowed to enter the metal outer case, the amount of magnetic shield used can be reduced, and a more economical design becomes possible.
【0012】さらには、磁気シールドと金属の外箱の間
に冷却ダクトを入れることによりこの間の磁気抵抗が増
加し、従来構造では金属の外箱へ漏れていた磁束が磁気
抵抗が増えたことにより抑制され、結果金属の外箱へ漏
れていた磁束を減らすことができる。又、冷却ダクトの
厚みを増やすことにより磁気シールドと金属の外箱の間
の磁気抵抗をさらに増やすことが可能であり、これによ
り金属の外箱への漏れ磁束の調整が可能となる。Further, by inserting a cooling duct between the magnetic shield and the metal outer box, the magnetic reluctance between them is increased, and the magnetic flux leaking to the metal outer box in the conventional structure is increased. As a result, the magnetic flux leaking to the metal outer box can be reduced. Also, by increasing the thickness of the cooling duct, it is possible to further increase the magnetic resistance between the magnetic shield and the metal outer box, thereby making it possible to adjust the leakage magnetic flux to the metal outer box.
【図1】(a)及び(b)は従来の磁気シールド構造の
全体図及び部分図。1A and 1B are an overall view and a partial view of a conventional magnetic shield structure.
【図2】(a)及び(b)は本発明を適用した磁気シー
ルド構造の全体図及び部分図。2A and 2B are an overall view and a partial view of a magnetic shield structure to which the present invention is applied.
1…金属の外箱、2…磁気シールド、3…固定金具、4
…絶縁物、5…冷却用ダクト、6…流路。1: Metal outer box, 2: Magnetic shield, 3: Fixing bracket, 4
... Insulator, 5 ... Cooling duct, 6 ... Flow path.
Claims (1)
より発生する漏れ磁束がそれらを取り囲む金属に侵入し
損失を発生させることを防止するため設置する磁気シー
ルドにおいて、金属と磁気シールドの間に冷却媒体の通
る空間を確保することを特徴とした電気機器。1. A magnetic shield installed between a metal and a magnetic shield to prevent a leakage magnetic flux generated from a coil of an electric device such as a transformer or a reactor from invading a metal surrounding the coil and causing a loss. Electrical equipment characterized by securing a space through which a cooling medium passes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9175521A JPH1126261A (en) | 1997-07-01 | 1997-07-01 | Electric appliance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9175521A JPH1126261A (en) | 1997-07-01 | 1997-07-01 | Electric appliance |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH1126261A true JPH1126261A (en) | 1999-01-29 |
Family
ID=15997522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9175521A Pending JPH1126261A (en) | 1997-07-01 | 1997-07-01 | Electric appliance |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH1126261A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103050231A (en) * | 2012-12-27 | 2013-04-17 | 吴江市变压器厂有限公司 | Transformer oil tank and installation method thereof |
CN103578698A (en) * | 2012-12-31 | 2014-02-12 | 大连信达变压器有限公司 | Novel transformer oil tank magnetic shielding mode |
-
1997
- 1997-07-01 JP JP9175521A patent/JPH1126261A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103050231A (en) * | 2012-12-27 | 2013-04-17 | 吴江市变压器厂有限公司 | Transformer oil tank and installation method thereof |
CN103578698A (en) * | 2012-12-31 | 2014-02-12 | 大连信达变压器有限公司 | Novel transformer oil tank magnetic shielding mode |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH1126261A (en) | Electric appliance | |
KR20090033304A (en) | Pole transformer with low vibration and low noise | |
JP2008177325A (en) | Stationary induction apparatus | |
KR102206798B1 (en) | Transformoer having sound absorption apparatus | |
JP3589012B2 (en) | Stationary induction appliance | |
JPH05135967A (en) | Transformer | |
JP2001160511A (en) | Stationary induction apparatus | |
CN112635177A (en) | Transformer magnetic leakage shielding system and transformer | |
JP2008041929A (en) | Stationary induction electric appliance | |
JP2004103633A (en) | Amorphous core molded transformer | |
JPH088124A (en) | Stationary induction electric device | |
JP2009272522A (en) | Three-phase transformer | |
JP3525732B2 (en) | Stationary induction appliance | |
JPH0722257A (en) | Stationary induction machine | |
JP3024007B2 (en) | Neon transformer | |
JP3161337B2 (en) | Transformer shield plate device | |
JP2008278653A (en) | Stator | |
JPH07335454A (en) | Stationary induction electrical equipment | |
JP5682892B2 (en) | Static induction machine | |
JPS5940753Y2 (en) | transformer | |
JP2003178922A (en) | Stationary induction apparatus | |
JP2019160865A (en) | Reactor and outdoor unit | |
JP2003017342A (en) | Ignition coil for internal combustion engine | |
JP2023184101A (en) | Power conversion system | |
JP2002075751A (en) | Stationary induction apparatus |