JP7032257B2 - Transformers and steel cores - Google Patents

Transformers and steel cores Download PDF

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JP7032257B2
JP7032257B2 JP2018133801A JP2018133801A JP7032257B2 JP 7032257 B2 JP7032257 B2 JP 7032257B2 JP 2018133801 A JP2018133801 A JP 2018133801A JP 2018133801 A JP2018133801 A JP 2018133801A JP 7032257 B2 JP7032257 B2 JP 7032257B2
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leg
yoke
tightening member
iron core
fastener
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JP2020013839A (en
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千絵 小林
孝平 佐藤
賢治 中ノ上
俊明 高橋
浩司 三本
直幸 栗田
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Hitachi Industrial Equipment Systems Co Ltd
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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
    • H01F27/24—Magnetic cores
    • H01F27/25—Magnetic cores made from strips or ribbons
    • 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
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/10—Single-phase transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/12—Two-phase, three-phase or polyphase transformers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Description

本発明は、変圧器および積鉄心に係り、特に、変圧器或いはリアクトル等の静止誘導電器に好適な積鉄心、および変圧器に関する。 The present invention relates to a transformer and a steel core, and more particularly to a transformer and a steel core suitable for a static induction electric device such as a reactor.

変圧器の鉄心材料には、損失が少なく透磁率の大きいケイ素鋼板が用いられてきたが、近年、エネルギー消費量の増加に伴う省エネニーズの高まりにより、変圧器の鉄心材料に、ケイ素鋼板に替わる鉄基アモルファス合金を用いた高効率な変圧器（以下、アモルファス変圧器という）の需要が高まっている。 Silicon steel plates with low loss and high magnetic permeability have been used as the core material of transformers, but in recent years, due to the growing need for energy saving due to the increase in energy consumption, silicon steel plates have been replaced as the core material of transformers. Demand for highly efficient transformers using iron-based amorphous alloys (hereinafter referred to as amorphous transformers) is increasing.

ところで、アモルファス変圧器の鉄心に用いられているアモルファス磁性薄帯は、磁性合金の溶融体を超急冷して製造される。一般的に、アモルファス磁性薄帯を用いて変圧器鉄心を製造する場合、切断したアモルファス磁性薄帯を積層面がコの字をなすように積層し、巻線を挿入した後、バットジョイントやラップジョイントと呼ばれる方法で、左右のアモルファス磁性薄帯を交互に重ね合わせることにより、閉磁路を形成する巻鉄心が作製される。 By the way, the amorphous magnetic strip used for the iron core of an amorphous transformer is manufactured by ultra-quenching a molten material of a magnetic alloy. Generally, when a transformer core is manufactured using an amorphous magnetic strip, the cut amorphous magnetic strip is laminated so that the laminated surface forms a U-shape, and after the winding is inserted, a butt joint or wrap is used. A wound iron core forming a closed magnetic path is manufactured by alternately superimposing left and right amorphous magnetic strips by a method called a joint.

また、巻線を鉄心に挿入する作業前には、アモルファス磁性薄帯の積層作業に起因する応力の影響を除去するため、鉄心を成形した状態で磁場中焼鈍を行う工程が入る。焼鈍後、アモルファス巻鉄心を絶縁紙で覆う、もしくは鉄心の積層面を樹脂で塗布する工程が入り、巻線に挿入され、変圧器として形成されていく。 Further, before the work of inserting the winding into the iron core, in order to remove the influence of stress caused by the work of laminating the amorphous magnetic thin band, a step of annealing in a magnetic field with the iron core molded is included. After annealing, the process of covering the amorphous wound iron core with insulating paper or applying the laminated surface of the iron core with resin is entered, and the material is inserted into the winding and formed as a transformer.

しかし、生産効率の観点から巻鉄心の大形化には限界がある。さらに、鉄心厚さが増していくにつれ、焼鈍時間の調整が難しくなり、焼鈍ムラも大きくなるため、鉄損も大きく増加する可能性がある。 However, from the viewpoint of production efficiency, there is a limit to the size of the winding core. Further, as the thickness of the iron core increases, it becomes difficult to adjust the annealing time, and the annealing unevenness also increases, so that the iron loss may increase significantly.

そこで、巻鉄心ではなく積鉄心とすることで、大形鉄心を反転することなく変圧器を組み立てることが可能となる。さらに、鉄心を分割して焼鈍することが可能となるため、焼鈍ムラによる鉄損増加も抑制できる。 Therefore, by using a stacked iron core instead of a wound core, it is possible to assemble a transformer without reversing the large iron core. Further, since the iron core can be divided and annealed, an increase in iron loss due to uneven annealing can be suppressed.

特許文献１は、アモルファス磁性薄帯を積層した積鉄心に関して、締金具を保持部材とし、磁性薄帯に貫通孔を設けて連結することで鉄心形状を保持した構造を提案している。 Patent Document 1 proposes a structure in which a stacked iron core in which an amorphous magnetic strip is laminated, a fastener is used as a holding member, and the magnetic strip is connected by providing a through hole to maintain the shape of the core.

特開２０１３－１１８２５４号公報Japanese Unexamined Patent Publication No. 2013-118254

特許文献１に開示された技術では、巻線を挿入した後に、一方のヨーク部の鉄心を組む、挿し鉄作業を考慮しておらず、巻線を鉄心に巻回する手法をとらなければならないため、作業工数が増加してしまう可能性がある。 In the technique disclosed in Patent Document 1, after inserting the winding, it is necessary to take a method of winding the winding around the iron core without considering the iron insertion work of assembling the iron core of one yoke portion. Therefore, there is a possibility that the work man-hours will increase.

本発明の目的は、挿し鉄作業が容易な変圧器および積鉄心を提供することにある。 An object of the present invention is to provide a transformer and a steel core for easy iron cutting work.

本発明の好ましい一例は、第一のヨークと、前記第一のヨークに接続される第一の脚部と第二の脚部と、前記第一の脚部と前記第二の脚部に接続される第二のヨークとを有する鉄心と、前記鉄心を支持する締金具と、を有する変圧器であって、
前記締金具は、
前記鉄心の積層方向を挟み込むように締め付け部材によって支持されており、前記第一の脚部に対応する第一の脚部締部材と、前記第二の脚部に対応する第二の脚部締部材と、前記第二のヨークに対応する第二のヨーク締部材が接続され、前記第一の脚部締部材の幅は、前記第一の脚部の鉄心幅よりも大きく、前記第二の脚部締部材の幅は、前記第二の脚部の鉄心幅よりも大きく、前記第二のヨーク締部材の幅は、前記第二のヨークの鉄心幅よりも大きく、
前記締金具のうち一方の前記締金具は、
前記第一のヨークの鉄心幅よりも大きい幅であって、前記第一の脚部締部材と前記第二の脚部締部材に接続される前記第一のヨークに対応する第一のヨーク締部材を有し、前記第一のヨーク締部材は、中央部に開放端を有することができる構成になっており、
前記締金具のうち他方の前記締金具は、
前記第一のヨークの鉄心幅よりも大きい幅であって、前記第一の脚部締部材と前記第二の脚部締部材とは分離可能な、前記第一のヨークに対応する、他の第一のヨーク締部材を有する変圧器である。 A preferred example of the present invention is to connect to the first yoke, the first leg and the second leg connected to the first yoke, and the first leg and the second leg. A transformer having an iron core having a second yoke and a fastener for supporting the iron core.
The fastener is
It is supported by a tightening member so as to sandwich the stacking direction of the iron core, and a first leg tightening member corresponding to the first leg and a second leg tightening corresponding to the second leg. The member and the second yoke tightening member corresponding to the second yoke are connected, and the width of the first leg tightening member is larger than the iron core width of the first leg, and the second leg tightening member is said. The width of the leg tightening member is larger than the iron core width of the second leg, and the width of the second yoke tightening member is larger than the iron core width of the second yoke.
One of the fasteners is the fastener
A first yoke tightening having a width larger than the iron core width of the first yoke and corresponding to the first yoke connected to the first leg tightening member and the second leg tightening member. The first yoke tightening member has a member, and the first yoke tightening member has a configuration capable of having an open end in the central portion.
The other fastener of the fasteners is
Others corresponding to the first yoke, which are wider than the core width of the first yoke and are separable from the first leg tightening member and the second leg tightening member. A transformer having a first yoke tightening member.

本発明の好ましい他の例は、第一のヨークと、前記第一のヨークに接続される第一の脚部と第二の脚部と、前記第一の脚部と前記第二の脚部に接続される第二のヨークとを有する鉄心と、前記鉄心を支持する締金具と、を有する積鉄心であって、
前記締金具は、
前記鉄心の積層方向を挟み込むように締め付け部材によって支持されており、前記第一の脚部に対応する第一の脚部締部材と、前記第二の脚部に対応する第二の脚部締部材と、前記第二のヨークに対応する第二のヨーク締部材が接続され、前記第一の脚部締部材の幅は、前記第一の脚部の鉄心幅よりも大きく、前記第二の脚部締部材の幅は、前記第二の脚部の鉄心幅よりも大きく、前記第二のヨーク締部材の幅は、前記第二のヨークの鉄心幅よりも大きく、
前記締金具のうち一方の前記締金具は、
前記第一のヨークの鉄心幅よりも大きい幅であって、前記第一の脚部締部材と前記第二の脚部締部材に接続される前記第一のヨークに対応する第一のヨーク締部材を有し、前記第一のヨーク締部材は、中央部に開放端を有することができる構成になっており、
前記締金具のうち他方の前記締金具は、
前記第一のヨークの鉄心幅よりも大きい幅であって、前記第一の脚部締部材と前記第二の脚部締部材とは分離可能な、前記第一のヨークに対応する、他の第一のヨーク締部材を有する積鉄心である。 Preferred other examples of the present invention are the first yoke, the first leg and the second leg connected to the first yoke, the first leg and the second leg. A product core having an iron core having a second yoke connected to the iron core and a fastener for supporting the iron core.
The fastener is
It is supported by a tightening member so as to sandwich the stacking direction of the iron core, and a first leg tightening member corresponding to the first leg and a second leg tightening corresponding to the second leg. The member and the second yoke tightening member corresponding to the second yoke are connected, and the width of the first leg tightening member is larger than the iron core width of the first leg, and the second leg tightening member is said. The width of the leg tightening member is larger than the iron core width of the second leg, and the width of the second yoke tightening member is larger than the iron core width of the second yoke.
One of the fasteners is the fastener
A first yoke tightening having a width larger than the iron core width of the first yoke and corresponding to the first yoke connected to the first leg tightening member and the second leg tightening member. The first yoke tightening member has a member, and the first yoke tightening member has a configuration capable of having an open end in the central portion.
The other fastener of the fasteners is
Others corresponding to the first yoke, which are wider than the core width of the first yoke and are separable from the first leg tightening member and the second leg tightening member. A steel core having a first yoke tightening member.

本発明は、挿し鉄作業を容易にした変圧器および積鉄心を実現できる。 The present invention can realize a transformer and a steel core that facilitates iron cutting work.

実施例１における単相の積鉄心の部品を示す図。The figure which shows the component of the single-phase product core in Example 1. FIG. 実施例１における積鉄心を組み立てる手順を説明する図。The figure explaining the procedure of assembling the product core in Example 1. FIG. 実施例２における三相の積鉄心の部品を示す図。The figure which shows the component of the three-phase product core in Example 2. FIG. 実施例２における積鉄心を組み立てる手順を説明する図。The figure explaining the procedure of assembling the product iron core in Example 2. FIG. 実施例２における積鉄心の投影図。The projection drawing of the iron core in Example 2. 実施例３を説明する図。The figure explaining Example 3. FIG. 実施例４を説明する図。The figure explaining Example 4. FIG.

以下、本発明にかかる変圧器鉄心の実施の形態について図面を用いて説明する。 Hereinafter, embodiments of the transformer core according to the present invention will be described with reference to the drawings.

図１は、実施例１における静止誘導電器用の単相の積鉄心の各部品図を示す。実施例１の締金具（１ａ～１ｄ）は、図１に示すように、積鉄心の部材である磁性薄帯（２ａ～２ｄ）の幅よりも広い幅の金具である。ここで、2aを積層した鉄心は、第一の脚部、2cを積層した鉄心は、第二の脚部、2dを積層した鉄心は、第一のヨーク、2bを積層した鉄心は、第二のヨークと呼ぶことにする。磁性薄帯は、アモルファス（非晶質）薄帯であり、１０μｍ以上５０μｍ未満の厚さの磁性薄帯を用いる。 FIG. 1 shows each part diagram of a single-phase stacked iron core for a static induction electric appliance in the first embodiment. As shown in FIG. 1, the fasteners (1a to 1d) of the first embodiment are metal fittings having a width wider than the width of the magnetic strips (2a to 2d) which are members of the steel core. Here, the iron core in which 2a is laminated is the first leg, the iron core in which 2c is laminated is the second leg, the iron core in which 2d is laminated is the first yoke, and the iron core in which 2b is laminated is the second. I'll call it York. The magnetic strip is an amorphous strip, and a magnetic strip having a thickness of 10 μm or more and less than 50 μm is used.

また、鉄心の片方の面に接する締金具（１ａ、１ｂ）は巻線を挿入するため、挿入できるように中央部に開放端を有して分割できるようにしている。また、もう片方の面に接する締金具（１ｃ、１ｄ）は、積鉄心の剛性を保持するため、一方の締金具（１a、１ｂ）とは別の箇所で分割できるようになっている。そして、締金具（１ｃ）と締金具（１ｄ）とは、連結される構造となっている。 Further, since the fasteners (1a, 1b) in contact with one surface of the iron core are for inserting windings, they have an open end at the center so that they can be divided. Further, the fasteners (1c, 1d) in contact with the other surface can be separated from the fasteners (1a, 1b) in order to maintain the rigidity of the steel core. The fastener (1c) and the fastener (1d) are connected to each other.

また、締金具（１a）は、第一の脚部、第二の脚部、および第一のヨークと第二のヨークのそれぞれを締め付ける締め部材として機能する。 Further, the fastener (1a) functions as a tightening member for tightening the first leg portion, the second leg portion, and the first yoke and the second yoke, respectively.

さらに、締金具（１ａ～１ｄ）には積鉄心作業時に、磁性薄帯の配置位置を示すガイドピン用の穴と、ネジ穴（３）を設けている。ガイドピンは、ガイドピン用の穴に差し込み可能となっている。ネジ穴（３）には、ネジやボルトなどの締め付け部材を差し込むことが出来る。 Further, the fasteners (1a to 1d) are provided with a hole for a guide pin indicating the arrangement position of the magnetic thin band and a screw hole (3) during the core work. The guide pin can be inserted into the hole for the guide pin. A tightening member such as a screw or a bolt can be inserted into the screw hole (3).

図２は、図１で示した締金具（１ａ～１ｄ）を用いて積鉄心を組み立てる手順を示した図である。まず、締金具（１ａ）を地面と水平に配置し、その上にガイドピン（４）に従って、磁性薄帯（２ａ～２ｃ）を配置する。 FIG. 2 is a diagram showing a procedure for assembling a steel core using the fasteners (1a to 1d) shown in FIG. First, the fastener (1a) is arranged horizontally with the ground, and the magnetic thin band (2a to 2c) is arranged on the fastener according to the guide pin (4).

一般的に、積鉄心は、磁性薄帯を交互にずらして積層方向に重ねていくため、所定の鉄心厚さになるまで、上部ヨーク部以外の磁性薄帯を重ねていく。ガイドピンにより、磁性薄帯の位置合わせが出来る。 Generally, in the stacked iron core, the magnetic thin bands are alternately shifted and stacked in the stacking direction, so that the magnetic thin bands other than the upper yoke portion are stacked until the thickness of the core is reached. The guide pin allows the alignment of the magnetic thin band.

次に、もう一方の締金具（１ｃ）を磁性薄帯の上に重ね、締金具（１ｃ）と締金具（１ａ）といった締金具同士を、締め付け部材であるネジ（６）で連結し、固定する。その後、上記積鉄心を地面と垂直にたて、締金具１ａの上方の開放端側から、巻線（５）を挿入する。 Next, the other fastener (1c) is placed on the magnetic thin band, and the fasteners (1c) and the fasteners (1a) are connected to each other with screws (6), which are tightening members, and fixed. do. After that, the steel core is erected perpendicular to the ground, and the winding (5) is inserted from the open end side above the fastener 1a.

厚みが、１０μｍ以上５０μｍ未満の磁性薄帯は紙のように曲がりやすいため、この特性を利用し、上部ヨーク部の挿し鉄作業を実施する。磁性薄帯をめくりながら重ねていき、所定の厚さになるまで積層させる。例えば、ガイドピンを３点に配置して、磁性薄帯の落下を防止できる。ガイドピンの形状は、円柱形などの丸い形状とし、その形状の部分と鉄心とを接触させるようにして、鉄心のずれを防止するようにしてもよい。 Since the magnetic strip having a thickness of 10 μm or more and less than 50 μm is easily bent like paper, this characteristic is utilized to carry out the iron cutting work of the upper yoke portion. The magnetic strips are turned over and stacked until they reach the specified thickness. For example, the guide pins can be arranged at three points to prevent the magnetic thin band from falling. The shape of the guide pin may be a round shape such as a cylinder, and the portion of the shape may be brought into contact with the iron core to prevent the iron core from shifting.

最後に、上部ヨーク部の締金具（１ｂ）と反対側の締金具（１ｃ）を取り付け、締め付け部材であるボルトで連結、固定する。以上のような方法で組み立てることで、剛性の低い薄い磁性薄帯であっても、鉄損を悪化させることなく、積鉄心の挿し鉄作業などの積作業を容易にし、形状を保持することが可能となる。 Finally, the fastener (1c) on the opposite side to the fastener (1b) of the upper yoke portion is attached, and is connected and fixed with a bolt which is a tightening member. By assembling by the above method, even if it is a thin magnetic strip with low rigidity, it is possible to facilitate the stacking work such as the iron insertion work of the stacking iron core and maintain the shape without aggravating the iron loss. It will be possible.

ここで、締め付け部材であるネジ（６）やボルトは、磁性薄帯を貫通することなく、締金具（１ａ～１ｄ）で挟まれた磁性薄帯の外側に配置され、締金具同士を締め付けるので、鉄損を悪化することを防ぐことができる。 Here, the screws (6) and bolts that are the tightening members are arranged on the outside of the magnetic strips sandwiched between the fasteners (1a to 1d) without penetrating the magnetic strips, and the fasteners are tightened to each other. , It is possible to prevent the iron loss from getting worse.

また、例えば、締金具は、SUSやアルミや絶縁材のような非磁性材料であることが望ましい。これにより、漂遊損の発生を抑制することが可能となる。
さらに、ガイドピンおよび連結ネジは絶縁材で形成するか、もしくは、ナットを絶縁部材にすることで、締金具を介して循環電流が流れるのを抑制することが望ましい。 Further, for example, it is desirable that the fastener is a non-magnetic material such as SUS, aluminum, or an insulating material. This makes it possible to suppress the occurrence of stray loss.
Further, it is desirable that the guide pin and the connecting screw are formed of an insulating material, or the nut is made of an insulating member to suppress the flow of circulating current through the fastener.

図３は、実施例２における静止誘導電器用の三相の積鉄心の各部品図を示す。
実施例２の締金具（１e～１i）は図３に示すように、積鉄心の部材である磁性薄帯（２e～２ｋ）の幅よりも広い幅の金具である。また、鉄心の片方の面に接する締金具（１e、１f、１g）は巻線を挿入するため分割しており、もう片方の面に接する締金具（１ｈ、１i）は、積鉄心の剛性を保持するため、一方の締金具（１e、１f、1g）とは別の箇所で分割され連結される構造となっている。 FIG. 3 shows each part diagram of the three-phase stacked iron core for the static induction electric appliance in the second embodiment.
As shown in FIG. 3, the fasteners (1e to 1i) of the second embodiment are metal fittings having a width wider than the width of the magnetic strip (2e to 2k) which is a member of the steel core. Further, the fasteners (1e, 1f, 1g) in contact with one surface of the iron core are divided to insert the winding, and the fasteners (1h, 1i) in contact with the other surface reduce the rigidity of the steel core. In order to hold it, it has a structure in which it is divided and connected at a place different from one of the fasteners (1e, 1f, 1g).

さらに、締金具（１e～１i）には積鉄心作業時に、磁性薄帯の配置位置を示すガイドピン用の穴とネジ穴（３）を設けている。また、図３に示したように、ガイドピンの穴にはガイドピン（４）を固定した状態で積鉄心作業を実施し、ネジ（６）で連結する際に、ネジ穴にネジを入れて固定する。 Further, the fasteners (1e to 1i) are provided with a hole for a guide pin and a screw hole (3) indicating the arrangement position of the magnetic thin band during the core work. Further, as shown in FIG. 3, the iron core work is carried out with the guide pin (4) fixed in the hole of the guide pin, and when connecting with the screw (6), a screw is inserted in the screw hole. Fix it.

図４は、図３で示した締金具（１e～１i）を用いて、積鉄心を組み立てる手順を示した図である。まず、締金具（１e）を地面と水平に配置し、その上にガイドピン（４）に従って、磁性薄帯（２e、２f、２ｇ、２ｈ、２i）を配置する。 FIG. 4 is a diagram showing a procedure for assembling a steel core using the fasteners (1e to 1i) shown in FIG. First, the fastener (1e) is placed horizontally with the ground, and the magnetic strips (2e, 2f, 2g, 2h, 2i) are placed on it according to the guide pin (4).

一般的に、積鉄心は磁性薄帯を交互にずらして積層方向に重ねていくため、所定の鉄心厚さになるまで、上部ヨーク部以外の磁性薄帯を重ねていく。 In general, since the stacked iron cores are stacked in the stacking direction by alternately shifting the magnetic strips, the magnetic strips other than the upper yoke portion are stacked until the thickness of the core is reached.

次に、もう一方の締金具（１h）を磁性薄帯の上に重ね、締金具同士をネジで連結し、固定する。その後、積鉄心を地面と垂直にたて、巻線（５）を挿入する。 Next, the other fastener (1h) is placed on the magnetic thin band, and the fasteners are connected to each other with screws and fixed. After that, the steel core is erected perpendicular to the ground and the winding (5) is inserted.

厚み数十μｍの磁性薄帯は紙のように曲がりやすいため、この特性を利用し、上部ヨーク部の挿し鉄作業を実施する。磁性薄帯をめくりながら重ねていき、所定の厚さになるまで積層させる。最後に、上部ヨーク部の締金具（１ｆ、１ｇ）と反対側の締金具（１i）を取り付け、ボルトで連結して、締金具（１ｆ、１ｇ）と締金具（１i）とを固定する。 Since a magnetic strip with a thickness of several tens of μm is easy to bend like paper, this characteristic is used to perform iron cutting work on the upper yoke. The magnetic strips are turned over and stacked until they reach the specified thickness. Finally, the fastener (1f, 1g) on the upper yoke portion and the fastener (1i) on the opposite side are attached and connected with bolts to fix the fastener (1f, 1g) and the fastener (1i).

図５は、完成した実施例２における積鉄心の投影図を示す。以上のような方法で組み立てることで、剛性の低い薄い磁性薄帯であっても、鉄損を悪化させることなく、積鉄心２の積作業を容易にし、形状を保持することが可能となる。図４における、第一の脚部としての磁性薄帯2e、第二の脚部としての磁性薄帯2f、第三の脚部としての磁性薄帯2gと、それらに対応した締金具（１ｈ、1e）の周囲に巻線を巻いた積鉄心は、静止誘導電器の一例である変圧器に適用することができる。 FIG. 5 shows a projection drawing of the steel core in the completed Example 2. By assembling by the above method, even if it is a thin magnetic strip having low rigidity, it is possible to facilitate the stacking work of the stacked iron core 2 and maintain the shape without deteriorating the iron loss. In FIG. 4, the magnetic strip 2e as the first leg, the magnetic strip 2f as the second leg, the magnetic strip 2g as the third leg, and the corresponding fasteners (1h, The steel core with windings wound around 1e) can be applied to a transformer, which is an example of a static induction electric device.

また、実施例１と同様に、例えば、締金具はSUSやアルミや絶縁材のような非磁性材料であることが望ましい。これにより、漂遊損の発生を抑制することが可能となる。 Further, as in the first embodiment, for example, it is desirable that the fastener is a non-magnetic material such as SUS, aluminum, or an insulating material. This makes it possible to suppress the occurrence of stray loss.

さらに、ガイドピンおよびネジ（６）は、絶縁材で形成するか、もしくは、ナットを絶縁部材にすることで、電気的に絶縁機能を有し、締金具を介して循環電流が流れるのを抑制することが望ましい。 Further, the guide pin and the screw (6) have an electrically insulating function by being formed of an insulating material or by using a nut as an insulating member, and suppress the flow of circulating current through the fastener. It is desirable to do.

図６は、実施例３を説明する図である。実施例３は、図１、図３で説明した、実施例１および実施例２の構成に対して、ガイドピン（４）の形状を変形した構成となっている。図６における左側の部分を拡大した、右側に示した部分図には、ガイドピンの形状を、みやすくするため、鉄心を除いた図を示している。 FIG. 6 is a diagram illustrating the third embodiment. The third embodiment has a configuration in which the shape of the guide pin (4) is modified from the configurations of the first and second embodiments described with reference to FIGS. 1 and 3. In the partial view shown on the right side, which is an enlarged view of the left side part in FIG. 6, the figure excluding the iron core is shown in order to make the shape of the guide pin easier to see.

図６では、鉄心の形状に沿って三角形とすることで、円柱形などの丸いガイドピンよりも、多角形の形状のガイドピンにすることで、鉄心との接触面積が増加するため、より強固に鉄心のずれを防止することが可能となる。なお、ガイドピンの外側に、ネジやボルトを貫通させて、締金具同士を固定するネジ穴（３）を配置している。 In FIG. 6, by forming a triangle along the shape of the iron core, the contact area with the iron core increases by using a guide pin having a polygonal shape rather than a round guide pin such as a cylinder, so that the guide pin is stronger. It is possible to prevent the iron core from shifting. In addition, a screw hole (3) for fixing the fasteners to each other by penetrating a screw or a bolt is arranged on the outside of the guide pin.

図７は、実施例４を説明する図である。
実施例４は、実施例１および２の図１、図３で説明した、実施例１および実施例２の構成に対して、締金具（１h、１i）と積鉄心との間に、弾性体であるゴムシート（７）を挿入した場合を示している。 FIG. 7 is a diagram illustrating the fourth embodiment.
In the fourth embodiment, with respect to the configurations of the first and second embodiments described in FIGS. 1 and 3 of the first and second embodiments, an elastic body is provided between the fasteners (1h, 1i) and the steel core. The case where the rubber sheet (7) is inserted is shown.

ゴムシート（７）を挿入することで、接合部で特に増加しやすい振動を抑制できるとともに、締金具に発生する漂遊損を低減することが可能となる。 By inserting the rubber sheet (7), it is possible to suppress vibration that tends to increase particularly at the joint portion, and it is possible to reduce the drifting loss that occurs in the fastener.

尚、ゴムシート（７）は、弾性率の低いゴムを用いれば、より低騒音化に有利となり、弾性率の高いゴムを用いれば経年劣化や高強度化に有利となるため、使用目的に合わせて、弾性率の異なるものを使用するのが望ましい。 As for the rubber sheet (7), if a rubber having a low elastic modulus is used, it is advantageous for lowering noise, and if a rubber having a high elastic modulus is used, it is advantageous for aging deterioration and high strength. Therefore, it is desirable to use those having different elastic moduli.

１a～１i…締金具、２a～２ｋ…磁性薄帯、４…ガイドピン、５…巻線、６…ネジ、７…ゴムシート 1a-1i ... Fasteners, 2a-2k ... Magnetic strips, 4 ... Guide pins, 5 ... Windings, 6 ... Screws, 7 ... Rubber sheets

Claims (15)

第一のヨークと、前記第一のヨークに接続される第一の脚部と第二の脚部と、前記第一の脚部と前記第二の脚部に接続される第二のヨークとを有する鉄心と、
前記鉄心を支持する締金具と、を有する変圧器であって、
前記締金具は、
前記鉄心の積層方向を挟み込むように締め付け部材によって支持されており、前記第一の脚部に対応する第一の脚部締部材と、前記第二の脚部に対応する第二の脚部締部材と、前記第二のヨークに対応する第二のヨーク締部材が接続され、前記第一の脚部締部材の幅は、前記第一の脚部の鉄心幅よりも大きく、前記第二の脚部締部材の幅は、前記第二の脚部の鉄心幅よりも大きく、前記第二のヨーク締部材の幅は、前記第二のヨークの鉄心幅よりも大きく、
前記締金具のうち一方の前記締金具は、
前記第一のヨークの鉄心幅よりも大きい幅であって、前記第一の脚部締部材と前記第二の脚部締部材に接続される前記第一のヨークに対応する第一のヨーク締部材を有し、前記第一のヨーク締部材は、中央部に開放端を有することができる構成になっており、
前記締金具のうち他方の前記締金具は、
前記第一のヨークの鉄心幅よりも大きい幅であって、前記第一の脚部締部材と前記第二の脚部締部材とは分離可能な、前記第一のヨークに対応する、他の第一のヨーク締部材を有することを特徴とする変圧器。 A first yoke, a first leg and a second leg connected to the first yoke, and a second yoke connected to the first leg and the second leg. With an iron core,
A transformer having a fastener for supporting the iron core.
The fastener is
It is supported by a tightening member so as to sandwich the stacking direction of the iron core, and a first leg tightening member corresponding to the first leg and a second leg tightening corresponding to the second leg. The member and the second yoke tightening member corresponding to the second yoke are connected, and the width of the first leg tightening member is larger than the iron core width of the first leg, and the second leg tightening member is said. The width of the leg tightening member is larger than the iron core width of the second leg, and the width of the second yoke tightening member is larger than the iron core width of the second yoke.
One of the fasteners is the fastener
A first yoke tightening having a width larger than the iron core width of the first yoke and corresponding to the first yoke connected to the first leg tightening member and the second leg tightening member. The first yoke tightening member has a member, and the first yoke tightening member has a configuration capable of having an open end in the central portion.
The other fastener of the fasteners is
Others corresponding to the first yoke, which are wider than the core width of the first yoke and are separable from the first leg tightening member and the second leg tightening member. A transformer characterized by having a first yoke tightening member. 請求項１に記載の変圧器において、
前記一方の前記締金具は、分離可能であり、
前記他方の前記締金具の分離可能な位置とは、異なった位置で、分離可能であることを特徴とする変圧器。 In the transformer according to claim 1,
One of the fasteners is separable and
A transformer characterized in that it is separable at a position different from the separable position of the other fastener. 請求項１に記載の変圧器において、
前記締金具に、ネジ穴及びガイドピンを設けたことを特徴とする変圧器。 In the transformer according to claim 1,
A transformer characterized in that the fastener is provided with a screw hole and a guide pin. 請求項１に記載の変圧器において、
前記鉄心の部材である磁性薄帯は、１０μｍ以上５０μｍ未満の厚さであることを特徴とする変圧器。 In the transformer according to claim 1,
A transformer characterized in that the magnetic strip, which is a member of the iron core, has a thickness of 10 μm or more and less than 50 μm. 請求項１に記載の変圧器において、
締め付け部材は、電気的に絶縁機能を有することを特徴とする変圧器。 In the transformer according to claim 1,
The tightening member is a transformer characterized by having an electrically insulating function. 請求項３に記載の変圧器において、
前記ガイドピンは、電気的に絶縁機能を有することを特徴とする変圧器。 In the transformer according to claim 3,
The guide pin is a transformer characterized by having an electrically insulating function. 請求項１に記載の変圧器において、
前記締金具の材質は、非磁性材料であることを特徴とする変圧器。 In the transformer according to claim 1,
A transformer characterized in that the material of the fastener is a non-magnetic material. 請求項３に記載の変圧器において、
前記ガイドピンの形状は、円柱もしくは多角柱であり、前記ガイドピンは前記鉄心に接することを特徴とする変圧器。 In the transformer according to claim 3,
The shape of the guide pin is a cylinder or a polygonal column, and the guide pin is in contact with the iron core. 請求項１に記載の変圧器において、
前記締金具と、前記鉄心との間に、弾性体を配置したことを特徴とする変圧器。 In the transformer according to claim 1,
A transformer characterized in that an elastic body is arranged between the fastener and the iron core. 請求項１に記載の変圧器において、
前記締め付け部材は、前記鉄心の外側に配置したことを特徴とする変圧器。 In the transformer according to claim 1,
The tightening member is a transformer characterized in that it is arranged outside the iron core. 請求項１に記載の変圧器において、
前記第一の脚部と前記第二の脚部には、巻線を巻いた構成を有することを特徴とする変圧器。 In the transformer according to claim 1,
A transformer characterized in that the first leg portion and the second leg portion have a configuration in which windings are wound. 第一のヨークと、前記第一のヨークに接続される第一の脚部と第二の脚部と、前記第一の脚部と前記第二の脚部に接続される第二のヨークとを有する鉄心と、
前記鉄心を支持する締金具と、を有する積鉄心であって、
前記締金具は、
前記鉄心の積層方向を挟み込むように締め付け部材によって支持されており、前記第一の脚部に対応する第一の脚部締部材と、前記第二の脚部に対応する第二の脚部締部材と、前記第二のヨークに対応する第二のヨーク締部材が接続され、前記第一の脚部締部材の幅は、前記第一の脚部の鉄心幅よりも大きく、前記第二の脚部締部材の幅は、前記第二の脚部の鉄心幅よりも大きく、前記第二のヨーク締部材の幅は、前記第二のヨークの鉄心幅よりも大きく、
前記締金具のうち一方の前記締金具は、
前記第一のヨークの鉄心幅よりも大きい幅であって、前記第一の脚部締部材と前記第二の脚部締部材に接続される前記第一のヨークに対応する第一のヨーク締部材を有し、前記第一のヨーク締部材は、中央部に開放端を有することができる構成になっており、
前記締金具のうち他方の前記締金具は、
前記第一のヨークの鉄心幅よりも大きい幅であって、前記第一の脚部締部材と前記第二の脚部締部材とは分離可能な、前記第一のヨークに対応する、他の第一のヨーク締部材を有することを特徴とする積鉄心。 A first yoke, a first leg and a second leg connected to the first yoke, and a second yoke connected to the first leg and the second leg. With an iron core,
A product core having a fastener for supporting the iron core.
The fastener is
It is supported by a tightening member so as to sandwich the stacking direction of the iron core, and a first leg tightening member corresponding to the first leg and a second leg tightening corresponding to the second leg. The member and the second yoke tightening member corresponding to the second yoke are connected, and the width of the first leg tightening member is larger than the iron core width of the first leg, and the second leg tightening member is said. The width of the leg tightening member is larger than the iron core width of the second leg, and the width of the second yoke tightening member is larger than the iron core width of the second yoke.
One of the fasteners is the fastener
A first yoke tightening having a width larger than the iron core width of the first yoke and corresponding to the first yoke connected to the first leg tightening member and the second leg tightening member. The first yoke tightening member has a member, and the first yoke tightening member has a configuration capable of having an open end in the central portion.
The other fastener of the fasteners is
Others corresponding to the first yoke, which are wider than the core width of the first yoke and are separable from the first leg tightening member and the second leg tightening member. A steel core having a first yoke tightening member. 請求項１２に記載の積鉄心において、
前記一方の前記締金具は、分離可能であり、
前記他方の前記締金具の分離可能な位置とは、異なった位置で、分離可能であることを特徴とする積鉄心。 In the product core according to claim 12,
One of the fasteners is separable and
A product core characterized in that it is separable at a position different from the separable position of the other fastener. 請求項１２に記載の積鉄心において、
前記締金具に、ネジ穴及びガイドピンを設けたことを特徴とする積鉄心。 In the product core according to claim 12,
A steel core having a screw hole and a guide pin provided in the fastener. 請求項１２に記載の積鉄心において、
前記鉄心の部材である磁性薄帯は、１０μｍ以上５０μｍ未満の厚さであることを特徴とする積鉄心。 In the product core according to claim 12,
The magnetic strip, which is a member of the iron core, is a product core having a thickness of 10 μm or more and less than 50 μm.
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JP2001196234A (en) 2000-01-14 2001-07-19 Hitachi Ltd Amorphous iron core molding transformer and manufacturing method therefor
JP2001244121A (en) 2000-03-01 2001-09-07 Hitachi Ltd Amorphous core transformer
JP2004103633A (en) 2002-09-05 2004-04-02 Hitachi Industrial Equipment Systems Co Ltd Amorphous core molded transformer
JP2013118254A (en) 2011-12-02 2013-06-13 Hitachi Ltd Product iron core for transformer
JP2014192293A (en) 2013-03-27 2014-10-06 Daihen Corp Amorphous wound core transformer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001196234A (en) 2000-01-14 2001-07-19 Hitachi Ltd Amorphous iron core molding transformer and manufacturing method therefor
JP2001244121A (en) 2000-03-01 2001-09-07 Hitachi Ltd Amorphous core transformer
JP2004103633A (en) 2002-09-05 2004-04-02 Hitachi Industrial Equipment Systems Co Ltd Amorphous core molded transformer
JP2013118254A (en) 2011-12-02 2013-06-13 Hitachi Ltd Product iron core for transformer
JP2014192293A (en) 2013-03-27 2014-10-06 Daihen Corp Amorphous wound core transformer

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