JP3418644B2 - Transformer core - Google Patents
Transformer coreInfo
- Publication number
- JP3418644B2 JP3418644B2 JP20639294A JP20639294A JP3418644B2 JP 3418644 B2 JP3418644 B2 JP 3418644B2 JP 20639294 A JP20639294 A JP 20639294A JP 20639294 A JP20639294 A JP 20639294A JP 3418644 B2 JP3418644 B2 JP 3418644B2
- Authority
- JP
- Japan
- Prior art keywords
- transformer
- core
- iron core
- iron
- yoke portion
- 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.)
- Expired - Fee Related
Links
Landscapes
- Regulation Of General Use Transformers (AREA)
Description
【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【産業上の利用分野】本発明は変圧器に係り、特にケイ
素鋼板を積層して成形した鉄心を使用した変圧器に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transformer, and more particularly to a transformer using an iron core formed by laminating silicon steel sheets.
【0002】[0002]
【従来の技術】従来の変圧器積鉄心は、均一な圧力で締
結するために、締金具を用いて鉄心の継鉄部を締結し、
鉄心に穿孔したのち、スタッドボルトとナットを用いて
締付ける。また、特開昭47−28419号公報開示の
技術は、予め曲げられた締金具を使用し、また、鉄心と
締付金具との間に絶縁板を介在させるものである。鉄心
に関しては特開平2−117111号公報に、鉄心の一
部を厚くして磁束密度の低減を図る構造が記載されてい
る。また実開昭53−98916号公報には、積鉄心継
鉄部の中央部と締金具の間に絶縁物のスペーサを挾んで
クランプすることが記載されている。これら従来技術
は、鉄心継鉄部を締金具で均一な圧力で締付けることに
より、騒音の減少と鉄損による特性の低下防止を目的と
するものである。特開昭51−110621号に開示の
技術は、鉄心締金具間にスペーサを設けているが、冷却
効果を期待してなされたものである。2. Description of the Related Art Conventional transformer cores are fastened with uniform pressure to fasten the yoke parts of the cores with fasteners.
After drilling the iron core, tighten it with stud bolts and nuts. In addition, the technique disclosed in Japanese Patent Laid-Open No. 47-28419 uses a pre-bent fastener, and an insulating plate is interposed between the iron core and the fastener. Regarding the iron core, JP-A-2-117111 discloses a structure in which a part of the iron core is thickened to reduce the magnetic flux density. Further, Japanese Utility Model Application Laid-Open No. 53-98916 discloses that an insulating material spacer is sandwiched and clamped between a central portion of a laminated core yoke portion and a fastener. These prior arts aim to reduce noise and prevent deterioration of characteristics due to iron loss by tightening the iron yoke part of the iron core with a uniform pressure. The technique disclosed in Japanese Patent Laid-Open No. 51-110621 has spacers provided between the iron core clamps, but it was made in expectation of a cooling effect.
【0003】[0003]
【発明が解決しようとする課題】上記従来技術は、部分
的には効果を上げているものの、継鉄部の均一な締付け
と鉄心の積層構造の改善を同時に満足し、騒音の減少と
鉄損による特性の低下防止を図り、要すれば鉄心の冷却
効果を期待する点に関して、総合的にみて十分な効果が
得られたとはいえなかった。本発明の目的は、変圧器積
鉄心において最も鉄損及び磁歪量が大きいとされる継鉄
部の磁束密度を低減して損失特性を改善し、変圧器の継
鉄部全体を均一な圧力で締付け、騒音の減少と鉄損によ
る特性の低下防止と、要すれば、積鉄心の冷却性能の改
善を目的としてなされたものである。Although the above-mentioned prior art is partially effective, it simultaneously satisfies the uniform tightening of the yoke portion and the improvement of the laminated structure of the iron core, thereby reducing noise and reducing iron loss. It was not possible to say that a sufficient effect was obtained as a whole in terms of preventing the deterioration of properties due to, and expecting the cooling effect of the iron core if necessary. The purpose of the present invention is to improve the loss characteristics by reducing the magnetic flux density of the yoke portion, which is said to have the largest iron loss and magnetostriction amount in the transformer core, and to improve the loss characteristics of the entire yoke portion of the transformer with a uniform pressure. The purpose of this is to reduce tightening and noise, prevent deterioration of characteristics due to iron loss, and if necessary, improve cooling performance of the laminated core.
【0004】[0004]
【課題を解決するための手段】上記目的を達成するため
に、第1の発明は、同一鉄心材料を用いて、変圧器積鉄
心の継鉄部の中央部の積厚を両端部分よりも厚くして、
脚鉄部に装着されるコイルの軸線と直交する継鉄部の断
面が、中央高になるように構成したのち、締金具を用い
て継鉄部を締結する。第2の発明は、鉄心継鉄部にコイ
ル軸線方向に沿って貫通するダクトを設け、前記継鉄部
の断面を中央高になるように形成するものである。第3
の発明は、前記貫通するダクトに代えて制振鋼板を介在
させる構成である。In order to achieve the above object, the first invention is to use the same iron core material to make the product thickness of the central portion of the yoke portion of the transformer product iron core thicker than both end portions. do it,
The cross section of the yoke portion orthogonal to the axis of the coil attached to the leg iron portion is configured to have a central height, and then the yoke portion is fastened by using fasteners. According to a second aspect of the present invention, a duct that penetrates along the coil axis direction is provided in the iron core yoke portion, and the cross section of the yoke portion is formed to have a central height. Third
The invention of No. 1 has a configuration in which a damping steel plate is interposed in place of the penetrating duct.
【0005】[0005]
【作用】上記の構成、すなわち、変圧器積鉄心の継鉄部
の中央部積厚が両端よりも厚い構造を有することによ
り、締金具を用いて両端を締付けると、中央部の締付が
緩くなることなく、均一に積鉄心の継鉄部を締結するこ
とができる。図4は、本発明による積鉄心の3相3脚部
の鉄損比を示す図である。図4において、直線部6での
鉄損を100%とすると、コ−ナ部7では120%、継
鉄部と中央脚の接合部8では190%程度の鉄損が発生
することが知られている。これは鉄心を製作する上で、
所定の形状寸法に切断した鉄心用鉄板をその切断面を当
接させて組立てるため、符号7及び符号8の部分におい
て複雑な磁気回路が構成されるために、うず電流損等の
損失が多く発生することが原因として考えられる。また
同様に、騒音についても符号7及び符号8の部分におけ
る磁歪量が符号6の部分に比して大きいことが知られて
いる。よって、符号8の継鉄部と中央脚の接合部の磁束
密度を低減させることにより、鉄損及び騒音に対する減
少効果を期待することができる。中央部の積厚が両端部
よりも厚い継鉄部を使用した3脚以上の積鉄心の場合で
は、最も鉄損及び磁歪量が大きい継鉄部と中央脚の接合
部の積厚を厚くして断面積を大きくしているので、この
部分の磁束密度は低下し、鉄損及び騒音が小さくなる。
従来形の鉄心のように中央部の締付が緩くなることはな
い。また、ダクトを使用した場合には、ダクト内を空気
が流れ鉄心が冷却され、ダクトに代えて制振鋼板を使用
すると、振動エネルギーを熱エネルギーに交換し、騒音
を低下させることができる。With the above structure, that is, the yoke portion of the transformer core is thicker than the both ends, when the both ends are tightened by using the fasteners, the central part becomes loose. It is possible to uniformly fasten the yoke portion of the laminated core without causing FIG. 4 is a diagram showing an iron loss ratio of a three-phase three-leg portion of a laminated iron core according to the present invention. In FIG. 4, assuming that the iron loss in the straight line portion 6 is 100%, it is known that 120% in the corner portion 7 and 190% in the joint portion 8 between the yoke portion and the central leg occur. ing. This is to make the iron core,
Since an iron plate for an iron core cut into a predetermined shape and dimensions is assembled with its cut surfaces abutting, a complicated magnetic circuit is formed in the portions of reference numerals 7 and 8, so that many losses such as eddy current loss occur. It can be considered as a cause. Similarly, regarding noise, it is known that the amount of magnetostriction in the portions denoted by reference numerals 7 and 8 is larger than that in the portion denoted by reference numeral 6. Therefore, by reducing the magnetic flux density at the joint between the yoke portion and the central leg of reference numeral 8, it is possible to expect a reduction effect on iron loss and noise. In the case of three or more laminated cores using a yoke part where the laminated thickness of the central part is thicker than both ends, increase the laminated thickness of the joint part of the yoke part and the central leg with the largest iron loss and magnetostriction amount. Since the cross-sectional area is increased, the magnetic flux density at this portion is reduced, and iron loss and noise are reduced.
Unlike the conventional iron core, the central part is not loosely tightened. Further, when a duct is used, air flows in the duct to cool the iron core, and when a damping steel plate is used instead of the duct, vibration energy can be exchanged for heat energy and noise can be reduced.
【0006】[0006]
【実施例】以下、本発明の変圧器積鉄心の実施例を図面
に基づいて説明する。以下の各実施例は、1000KVA
変圧器であって、鉄心の実機寸法が、幅約1300mm、
高さ約1300mm、厚さ約200mm、重量約1700kg
に適用した例について記述する。
〈実施例1〉図1は、本発明の変圧器積鉄心の締結状態
を示す実施例1の斜視図、図2は同上面図、図3は同積
鉄心の斜視図である。実施例1は、積鉄心1の継鉄部1
aの中央部の積厚を厚くするために鉄心板層2を設けた
ものである。これにより、一対の締金具3、3をスタッ
ドボルト4、ナット5により締付けたとき、鉄心全体を
均一な圧力で締付けることができるというものである。
ここで鉄心板層2の材質は鉄心1と同じ材質の方向性ケ
イ素鋼板の使用が好ましいが、無方向性ケイ素鋼板でも
よく、また、非晶質磁性体を使用することも考えられ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a transformer core according to the present invention will be described below with reference to the drawings. The following examples are each 1000 KVA
It is a transformer, and the actual size of the iron core is about 1300 mm wide,
Height about 1300mm, thickness about 200mm, weight about 1700kg
The example applied to is described. <Embodiment 1> FIG. 1 is a perspective view of Embodiment 1 showing a fastening state of a transformer core according to the present invention, FIG. 2 is a top view thereof, and FIG. 3 is a perspective view of the core core. Example 1 is a yoke portion 1 of a laminated core 1.
The core plate layer 2 is provided in order to increase the stack thickness of the central portion of a. As a result, when the pair of fasteners 3 and 3 are fastened by the stud bolt 4 and the nut 5, the entire iron core can be fastened with a uniform pressure.
Here, it is preferable to use the grain-oriented silicon steel plate of the same material as the core 1 as the material of the iron-core plate layer 2, but a non-oriented silicon steel plate may be used, and it is also conceivable to use an amorphous magnetic material.
【0007】〈実施例2〉図5は、本発明の実施例2に
よる変圧器積鉄心の斜視図、図6は、同締結状態を示す
上面図である。図5に示すように、実施例2は中央脚の
み積み厚を増やしたものである。この場合も、実施例1
に準じた効果が得られ作業も簡素化されるが、図6によ
り明らかのように、積鉄心1と締金具3の間にすき間S
が生ずるので、Sの部分に鉄心板や絶縁物を挿入するの
が好ましいこともある。なお、この場合、継鉄部1aの
積増分に対して、磁束はケイ素鋼板の圧延方向に対して
直角方向に流れるので、無方向性ケイ素鋼板を積増しす
ることが好ましい。<Second Embodiment> FIG. 5 is a perspective view of a transformer core according to a second embodiment of the present invention, and FIG. 6 is a top view showing the same fastening state. As shown in FIG. 5, in the second embodiment, only the central leg has an increased stacking thickness. Also in this case, the first embodiment
Although the effect similar to that is obtained and the work is simplified, as is clear from FIG. 6, there is a gap S between the laminated core 1 and the fastener 3.
Therefore, it is sometimes preferable to insert an iron core plate or an insulator in the S portion. In this case, since the magnetic flux flows in a direction perpendicular to the rolling direction of the silicon steel sheet with respect to the product increment of the yoke portion 1a, it is preferable to add the non-oriented silicon steel sheet.
【0008】〈実施例3〉図7は、実施例3による変圧
器積鉄心の締結状態を示す斜視図、図8は、同上面図で
ある。図示するように、実施例3は継鉄部1aの鉄心層
を2分した中間に鉄心板層2をサンドイッチ状に挿入し
た実施例である。図9は同変圧器積鉄心の正面図であ
る。本実施例も実施例1、2と同様の効果が得られる。
図9に示すように、磁束は継鉄部1aを矢印Aの方向に
流れる瞬間が最も流れにくく、また騒音や損失増加の要
因となっている。これは図3により明らかなように、継
鉄部1aを構成する鉄板には、中央脚部1cとの継目部
分にV形の切欠き部10があり、これは圧延方向の異な
るケイ素鋼板の交叉によって生ずるものであるから、矢
印Aのように磁束が通過する瞬間には、切欠き部10で
流れにくくなり、騒音や鉄損の発生原因となっている。
図1や図7の実施例は、前記切欠き部10に長方形の鉄
心板層2を積増ししており、鉄心板層2を介することに
より、磁束は切欠き部10での通過が容易になり、騒音
や鉄損の低減に効果的である。特に実施例3において
は、実施例1と比較すると、継鉄部1aを構成する外側
の鉄板は切欠きを設けずに、両脚部1b、1bと中央脚
部1cとを直接連結する1枚板で形成しているから、騒
音と鉄損の低減には有効である。本実施例の応用とし
て、図10に示すように積層鉄心間に鉄心板層2を形成
してもよいが、いずれの積増しにおいても鉄心の共振を
避けるようにしなければならない。<Embodiment 3> FIG. 7 is a perspective view showing a fastened state of a transformer core according to Embodiment 3, and FIG. 8 is a top view of the same. As shown in the drawing, the third embodiment is an embodiment in which an iron core plate layer 2 is inserted in a sandwich shape in the middle of the iron core layer of the yoke portion 1a. FIG. 9 is a front view of the same transformer core. In this embodiment, the same effect as in the first and second embodiments can be obtained.
As shown in FIG. 9, the magnetic flux is the most difficult to flow at the moment when it flows in the yoke portion 1a in the direction of the arrow A, and causes a noise and an increase in loss. As is clear from FIG. 3, the iron plate constituting the yoke portion 1a has a V-shaped notch portion 10 at the joint portion with the central leg portion 1c, which is a cross-section of silicon steel plates having different rolling directions. Since it is caused by the above, it becomes difficult for the magnetic flux to flow in the cutout portion 10 at the moment when the magnetic flux passes as shown by the arrow A, which causes noise and iron loss.
In the embodiment of FIGS. 1 and 7, a rectangular iron core plate layer 2 is added to the notch portion 10, and by passing the iron core plate layer 2, magnetic flux can easily pass through the notch portion 10. It is effective in reducing noise and iron loss. Particularly in the third embodiment, as compared with the first embodiment, the outer iron plate that constitutes the yoke portion 1a is not provided with a notch, and a single plate that directly connects the both leg portions 1b and 1b to the central leg portion 1c. It is effective in reducing noise and iron loss. As an application of this embodiment, the iron core plate layer 2 may be formed between the laminated iron cores as shown in FIG. 10, but the resonance of the iron core must be avoided in any addition.
【0009】〈実施例4〉次に、実施例4を図11、図
12により説明する。本実施例は、実施例1〜実施例3
の鉄心板層2の代りに、パイプ状のダクト10や波形の
ダクト11を装備し、空気の流通する空間を備えた積鉄
心による実施例である。ダクトの位置は積層鉄心の間に
設けてもよいし、積層鉄心と締金具の間に設けてもよ
く、ダクトの形状は図11に示すようなパイプ状または
図12に示す波形のものでもよく、形状に限定されない
が、材料と構造は鉄心締結時の圧力に耐える強度を有す
る必要がある。また、鉄損を増加させないためには、非
磁性体材質を使用するのが好ましい。なお、鉄心積層間
にダクトを挿入した場合は、両脚部1b、中央脚部1c
の断面は2層の積鉄心に分離される。これにより、積鉄
心の継鉄部1a全体を均一の圧力で締付けることがで
き、かつ積鉄心の冷却効果も得られる。<Fourth Embodiment> Next, a fourth embodiment will be described with reference to FIGS. The present embodiment is the first to third embodiments.
In this embodiment, a pipe-shaped duct 10 or a corrugated duct 11 is provided in place of the iron core plate layer 2, and a laminated iron core is provided with a space in which air flows. The duct may be provided between the laminated iron cores or between the laminated iron cores and the fasteners, and the duct may have a pipe shape as shown in FIG. 11 or a corrugated shape as shown in FIG. Although not limited to the shape, the material and the structure need to have the strength to withstand the pressure when fastening the iron core. Further, in order not to increase iron loss, it is preferable to use a non-magnetic material. In addition, when the duct is inserted between the core laminations, both leg portions 1b and central leg portion 1c
The cross section is separated into two layers of laminated core. As a result, the entire yoke portion 1a of the laminated core can be tightened with a uniform pressure, and a cooling effect of the laminated core can be obtained.
【0010】〈実施例5〉図13は実施例5による変圧
器積鉄心の締結状態を示す上面図である。実施例5は、
制振鋼板を使用して鉄心の積厚を増加させた例である。
図15に示すように、制振鋼板12は0.05mm〜0.
2mmの厚さの制振樹脂14を2枚の鋼板13の間に挟
み、接着したサンドイッチ形鋼板であって、振動を減衰
し、機器の騒音低減に好適な素材である。図14は、制
振鋼板の使用温度と損失係数ηの関係特性の一例を示す
図であって、通常、制振鋼板の制振性は損失係数によっ
て示される。図示するように、適用する振動周波数にお
いて、鉄心の温度上昇や使用環境などにより、例えば、
品番C20またはC60のような特性の相違があるから、使用
条件により好適な品番を選択することが必要である。ま
た、変圧器の騒音と周波数の特性を考慮した上で、使用
する周波数に適応し損失係数が極小になる制振鋼板の品
番を選定することが効果的である。また、制振鋼板12
の適用は、図2の実施例1のように、積鉄心1と締金具
3の間、または、図8の実施例3のように、積鉄心の積
層間に介設してもよいが、制振鋼板12の性能をより効
果的に活用するためには、図13に示すように分散して
配置することが好ましい。この場合、図15に示した通
常の鋼板13に代えてケイ素鋼板を使用することによっ
て、磁気特性と防音特性を共に高めることが可能な構造
の変圧器積鉄心を得ることができ極めて好都合である。
また、実施例4におけるダクト用材として制振鋼板を使
用することにより、ダクトによる冷却効果と騒音防止効
果の優れた変圧器積鉄心を得ることができる。<Fifth Embodiment> FIG. 13 is a top view showing a fastened state of a transformer core according to a fifth embodiment. Example 5 is
This is an example of increasing the thickness of the iron core by using a damping steel plate.
As shown in FIG. 15, the damping steel plate 12 has a thickness of 0.05 mm to 0.
It is a sandwich type steel plate in which a damping resin 14 having a thickness of 2 mm is sandwiched between two steel plates 13, and is a material suitable for damping vibration and reducing noise of equipment. FIG. 14 is a diagram showing an example of a relational characteristic between the use temperature of the damping steel plate and the loss coefficient η, and the damping property of the damping steel plate is usually represented by the loss coefficient. As shown in the figure, at the vibration frequency to be applied, depending on the temperature rise of the iron core and the usage environment, for example,
Since there are differences in characteristics such as product number C20 or C60, it is necessary to select a suitable product number depending on the usage conditions. In addition, it is effective to select the product number of the damping steel plate that adapts to the frequency used and minimizes the loss coefficient after considering the noise and frequency characteristics of the transformer. Also, the damping steel plate 12
The application may be performed between the laminated iron core 1 and the fastener 3 as in the first embodiment of FIG. 2 or between the laminated layers of the laminated iron core as in the third embodiment of FIG. In order to utilize the performance of the vibration damping steel plate 12 more effectively, it is preferable to disperse the vibration damping steel plate 12 as shown in FIG. In this case, by using a silicon steel plate instead of the ordinary steel plate 13 shown in FIG. 15, it is possible to obtain a transformer core having a structure capable of enhancing both magnetic properties and soundproof properties, which is extremely convenient. .
Further, by using the damping steel plate as the duct material in the fourth embodiment, it is possible to obtain a transformer core having excellent cooling effect and noise prevention effect by the duct.
【0011】本発明の効果は、上記実施例に示すよう
に、鉄心の寸法や重量に制約されないが、例えば、上記
した寸法及び重量の鉄心に適用した場合、3dB〜4dBの
騒音低減効果があり、また、騒音が低減された分だけ、
低減前の騒音値と同等になるよう磁束密度を上げたとす
ると、鉄心重量を約3%軽減することができる。さらに
上記各実施例は3脚積鉄心について説明したが、3脚以
上の鉄心においても同様の効果が得られることは言うま
でもなく、また2脚の場合にも使用可能である。The effect of the present invention is not restricted by the size and weight of the iron core as shown in the above embodiment, but when applied to the iron core having the above size and weight, for example, there is a noise reduction effect of 3 dB to 4 dB. , Also, because the noise is reduced,
If the magnetic flux density is increased so as to be equal to the noise value before reduction, the iron core weight can be reduced by about 3%. Furthermore, although each of the above-mentioned embodiments has been described with respect to a three-legged iron core, it is needless to say that the same effect can be obtained with three or more iron cores, and the present invention can also be used in the case of two legs.
【0012】[0012]
【発明の効果】本発明の実施により、従来のように鉄心
に穿孔して組付けを行なわず、しかも最も鉄損が大きい
とされる継鉄部と中央脚部の接合部の積厚を厚くするこ
とにより、鉄心継鉄部全体を均一な圧力で締付ける効果
と積厚の増加部分により、磁束密度が低減され、低騒音
化、低損失化に極めて効果的な変圧器の構造を実現する
ことができる。また、ダクトを介して積厚の増加部分を
形成した構造、または、積厚の増加部分に制振鋼板を用
いた構造、さらにまた、前記ダクトに制振鋼板を用いた
構造など、積厚の増加部分の形成に種々の組合せと変化
をもたせることにより、鉄心の冷却効果が付加され、低
騒音化、低損失化、並びに、温度特性の向上に極めて効
果的な変圧器積鉄心を提供することができる。As a result of implementing the present invention, it is possible to increase the product thickness of the joint portion between the yoke portion and the central leg portion, which has the largest iron loss and is not pierced in the iron core to be assembled as in the prior art. By doing so, it is possible to realize a transformer structure that is extremely effective in reducing noise and reducing loss because the magnetic flux density is reduced due to the effect of tightening the entire core yoke part with uniform pressure and the part where the product thickness increases. You can In addition, a structure in which a part having an increased product thickness is formed through a duct, or a structure using a damping steel plate for the part having an increased product thickness, and a structure using a damping steel plate for the duct are used. By providing various combinations and changes in the formation of the increased portion, the cooling effect of the iron core is added, and it is possible to provide a transformer iron core that is extremely effective in reducing noise, reducing loss, and improving temperature characteristics. You can
【図1】本発明の変圧器積鉄心の締結状態を示す実施例
1の斜視図である。FIG. 1 is a perspective view of a first embodiment showing a fastening state of a transformer core according to the present invention.
【図2】図1の上面図である。FIG. 2 is a top view of FIG.
【図3】本発明の変圧器積鉄心の実施例1の斜視図であ
る。FIG. 3 is a perspective view of a first embodiment of a transformer core according to the present invention.
【図4】積鉄心の3相3脚部鉄損比を示す図である。FIG. 4 is a diagram showing a three-phase three-leg iron loss ratio of a laminated iron core.
【図5】本発明の変圧器積鉄心の実施例2の斜視図であ
る。FIG. 5 is a perspective view of a transformer core according to a second embodiment of the present invention.
【図6】本発明の変圧器積鉄心の締結状態を示す実施例
2の上面図である。FIG. 6 is a top view of a second embodiment showing a fastening state of the transformer core according to the present invention.
【図7】本発明の変圧器積鉄心の締結状態を示す実施例
3の斜視図である。FIG. 7 is a perspective view of a third embodiment showing a fastening state of a transformer core according to the present invention.
【図8】図7の上面図(a)と脚部断面図(b)であ
る。FIG. 8 is a top view (a) and a leg cross-sectional view (b) of FIG. 7.
【図9】本発明の変圧器積鉄心の磁束が流れにくい方向
を示す図である。FIG. 9 is a diagram showing a direction in which magnetic flux of the transformer laminated core of the present invention is hard to flow.
【図10】本発明の変圧器積鉄心の締結状態を示す実施
例3の応用例の上面図(a)と脚部断面図(b)であ
る。FIG. 10 is a top view (a) and a leg sectional view (b) of an application example of the third embodiment showing a fastening state of the transformer laminated core of the present invention.
【図11】本発明の変圧器積鉄心の締結状態を示す実施
例4の上面図(a)と脚部断面図(b)である。FIG. 11 is a top view (a) and a leg cross-sectional view (b) of Example 4 showing a tightened state of the transformer core according to the present invention.
【図12】本発明の変圧器積鉄心の締結状態を示す実施
例4の他の上面図(a)と脚部断面図(b)である。FIG. 12 is another top view (a) and a leg cross-sectional view (b) of the fourth embodiment showing the fastening state of the transformer core according to the present invention.
【図13】本発明の変圧器積鉄心の締結状態を示す実施
例5の上面図(a)と脚部断面図(b)である。FIG. 13 is a top view (a) and a leg section cross-sectional view (b) of Example 5 showing a fastening state of a transformer core according to the present invention.
【図14】制振鋼板の使用温度と損失係数の関係を示す
特性図である。FIG. 14 is a characteristic diagram showing the relationship between the operating temperature of the damping steel sheet and the loss coefficient.
【図15】制振鋼板の構造を示す断面図である。FIG. 15 is a cross-sectional view showing the structure of a vibration damping steel plate.
1…積鉄心 2…鉄心板層
1a…継鉄部 1b…両脚部 1c…中央脚部
3…締金具 4…スタッド
5…ナット 6…直線部
7…コ−ナ部 8…接合部
9…切欠き部 10…パイプ状のダク
ト
11…波形ダクト 12…制振鋼板
13…鋼板 14…制振樹脂DESCRIPTION OF SYMBOLS 1 ... Laminated core 2 ... Iron core plate layer 1a ... Yoke part 1b ... Both leg parts 1c ... Central leg part 3 ... Fastener 4 ... Stud 5 ... Nut 6 ... Straight part 7 ... Corner part 8 ... Joint part 9 ... Cut Notch 10 ... Pipe-shaped duct 11 ... Corrugated duct 12 ... Damping steel plate 13 ... Steel plate 14 ... Damping resin
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭47−28419(JP,A) 特開 昭51−110621(JP,A) 実開 平2−4223(JP,U) 実開 昭55−12626(JP,U) (58)調査した分野(Int.Cl.7,DB名) H01F 27/25 H01F 27/26 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-47-28419 (JP, A) JP-A-51-110621 (JP, A) Actually open 2-4223 (JP, U) Actually open 55- 12626 (JP, U) (58) Fields surveyed (Int.Cl. 7 , DB name) H01F 27/25 H01F 27/26
Claims (3)
て、 変圧器の両端脚部よりも少なくとも中央積厚寸法の大な
る継鉄部を備え、 締結手段を用いて前記継鉄部を押圧して締結することを
特徴とする変圧器積鉄心。Claim: What is claimed is: 1. A transformer laminated core comprising a stack of steel plates, comprising a yoke portion having a central product thickness dimension at least larger than both end legs of the transformer, and pressing the yoke portion using fastening means. A transformer laminated iron core, which is characterized by being fastened to each other.
器のコイル軸線方向に沿って前記継鉄部を貫通するダク
トを有することを特徴とする請求項1記載の変圧器積鉄
心。2. The transformer product according to claim 1, wherein the yoke portion having a large central product thickness dimension has a duct penetrating the yoke portion along a coil axis direction of the transformer. Iron core.
より中央積厚寸法を増加することを特徴とする請求項1
記載の変圧器積鉄心。3. The central laminated thickness dimension is increased by interposing a damping steel plate in the yoke portion.
The listed transformer core.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20639294A JP3418644B2 (en) | 1994-08-31 | 1994-08-31 | Transformer core |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20639294A JP3418644B2 (en) | 1994-08-31 | 1994-08-31 | Transformer core |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0869922A JPH0869922A (en) | 1996-03-12 |
JP3418644B2 true JP3418644B2 (en) | 2003-06-23 |
Family
ID=16522595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20639294A Expired - Fee Related JP3418644B2 (en) | 1994-08-31 | 1994-08-31 | Transformer core |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3418644B2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5531550B2 (en) * | 2009-10-21 | 2014-06-25 | Jfeスチール株式会社 | Ordering / shipping methods for grain oriented electrical steel sheets for transformers |
WO2014170978A1 (en) * | 2013-04-17 | 2014-10-23 | 株式会社日立産機システム | Transformer |
CN105006344B (en) * | 2015-08-21 | 2017-08-08 | 南车株洲电机有限公司 | A kind of electric locomotive and tractive transformer |
KR101904100B1 (en) * | 2016-12-20 | 2018-10-04 | 효성중공업 주식회사 | Core for transformer |
-
1994
- 1994-08-31 JP JP20639294A patent/JP3418644B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0869922A (en) | 1996-03-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA1176324A (en) | Laminated grid and web magnetic cores | |
JPS62222614A (en) | Composite core of silicon steel-amorphous steel for transformer | |
JP3418644B2 (en) | Transformer core | |
US4032874A (en) | Reactor core | |
JPH09153416A (en) | Core reactor with gap | |
JP3357705B2 (en) | Iron core type reactor with gap | |
JP2753122B2 (en) | Iron core with gap for transformer | |
JP3910488B2 (en) | Reactor | |
JP2597545B2 (en) | Reactor | |
JPS61218122A (en) | Core type reactor with gap | |
JP3357706B2 (en) | Iron core type reactor with gap | |
JPH0140184Y2 (en) | ||
JP3823418B2 (en) | Core with gap for reactor | |
JP2004349617A (en) | Dust core for reactor | |
JPS582445B2 (en) | Magnetic shield tightening device for air core reactor | |
JPS6327006A (en) | Reactor | |
JPH06204050A (en) | Core type reactor with gap | |
JPH05101944A (en) | Iron-core type reactor with gap | |
JPH0786061A (en) | Gapped iron core type reactor | |
JPS582037Y2 (en) | Trance | |
JPH0128646Y2 (en) | ||
JPH04303904A (en) | Iron-core type reactor provided with gap | |
JPH01308010A (en) | Iron-core type reactor with gap | |
JP2602682Y2 (en) | Transformer | |
JPS6018909A (en) | Wound core type transformer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |