JP4518907B2

JP4518907B2 - Static induction equipment coil

Info

Publication number: JP4518907B2
Application number: JP2004310780A
Authority: JP
Inventors: 宏筒井; 朋宏海津; 義光伊藤; 正樹竹内; 利夫緒形
Original assignee: Hitachi Industrial Equipment Systems Co Ltd
Current assignee: Hitachi Industrial Equipment Systems Co Ltd
Priority date: 2004-10-26
Filing date: 2004-10-26
Publication date: 2010-08-04
Anticipated expiration: 2024-10-26
Also published as: JP2006128179A

Description

本発明は、内部にコイルを備えてタップ線を引出し、電源電圧を所定の電圧に変換する変圧器等の静止誘導機器に用いられるコイル構造及びタップ線引出し方法に関する。 The present invention relates to a coil structure and a tap wire drawing method used in a static induction device such as a transformer that includes a coil inside and draws a tap wire to convert a power supply voltage into a predetermined voltage.

コイルの製造方法のひとつとして、巻線コイルをコイルの内周から外周へと渦巻き状に巻線し、最外周まで巻線したら段上がりして外周から内周へ向かって巻線し、これを繰り返し行って、コイルを積層形成する方法がある。この方法によれば、従来必要となっていた層間紙を廃止することが出来、必要最小限の絶縁構成を図ることが出来ると共に、クラックが発生する危険性を軽減できる。また、コイル内部で発生するジュール熱を放熱する上での阻害要因である層間紙を廃止したため、放熱性が向上し、コイルのコンパクト化を図ることができる。また、絶縁構成が簡素化され、巻線作業の自動化が容易となる。 As one of the coil manufacturing methods, the winding coil is spirally wound from the inner periphery to the outer periphery of the coil, and when it is wound to the outermost periphery, it is stepped up and wound from the outer periphery toward the inner periphery. There is a method of repeatedly forming a coil by laminating. According to this method, the conventionally required interlayer paper can be abolished, and a minimum insulation structure can be achieved, and the risk of cracking can be reduced. In addition, since the interlayer paper, which is a hindrance factor in dissipating the Joule heat generated inside the coil, has been eliminated, the heat dissipation is improved, and the coil can be made compact. In addition, the insulation configuration is simplified and the winding work is easily automated.

しかしながら、上述した技術では、未だ、以下のような問題点があった。すなわち、タップ線を巻線の途中で引き出す際に、タップ引出し部がコイル径方向の内側のターンとなる場合、タップ線をコイル外周側まで引き出さなければならず、引出し線と交差する巻線コイルとの間に絶縁処理を施す必要がある。この絶縁処理はコイルのコンパクト化を図る上での阻害要因となる。また、タップ端子との接続作業を行うため、予め巻線途中のタップ引出し部で導線を巻線コイルの外側に引き出しておく必要があり、巻線作業が中断され、作業効率の悪化を招いていた。 However, the above-described technique still has the following problems. That is, when pulling out the tap wire in the middle of the winding, if the tap lead portion becomes a turn inside the coil radial direction, the tap wire must be drawn to the coil outer peripheral side, and the winding coil intersects with the lead wire It is necessary to insulate between the two. This insulation process becomes an obstructive factor in reducing the size of the coil. In addition, in order to perform the connection work with the tap terminal, it is necessary to draw out the conducting wire to the outside of the winding coil in advance at the tap drawing part in the middle of the winding, which interrupts the winding work, leading to deterioration of work efficiency. It was.

本発明は、上記の問題点を解決するため、絶縁の簡素化および合理化を図ったタップ部構造を有すると共に、巻線工程について、タップ引出し工程を含めた自動化を図れる静止誘導機器コイルを提案するものである。 In order to solve the above problems, the present invention proposes a static induction device coil that has a tap portion structure that simplifies and rationalizes insulation, and that can automate the winding process including the tap drawing process. Is.

本発明は、上記目的を達成するために、導体をコイル径方向の外周から内周に向かって複数回巻付けて段を形成したあとコイル軸方向に段上りしてコイル径方向の内周から外周に向かって複数回巻付けて次の段を形成し、所望の巻数まで巻回するとともに、タップ線を設けた静止誘導機器コイルであって、前記コイルは、平角線を成形してエッジワイズに曲げ加工を行いながら成形し、前記タップ線の少なくとも１つは、段当たりの導体巻付け数が他の段より少なくとも１ターン以上少なく巻付けた段の最外周の導体部分から引出され、前記導体を、タップ線を設ける個所で切断させることなく連続で巻付け、かつ引出すタップ線を設ける導体部分は、他の段の最外周の導体部分よりもコイル径方向に突出したことを特徴とする。 In order to achieve the above object, the present invention forms a step by winding a conductor a plurality of times from the outer periphery in the coil radial direction toward the inner periphery, and then steps up in the coil axial direction from the inner periphery in the coil radial direction. Winding a plurality of times toward the outer periphery to form the next stage, winding to a desired number of turns, and a stationary induction device coil provided with a tapped wire, the coil forming a rectangular wire and edgewise Forming at least one of the tapped wires is drawn out from the outermost conductor portion of the step wound at least one turn more than the other step than the other steps, The conductor portion is continuously wound without being cut at the portion where the tap wire is provided, and the conductor portion where the drawn tap wire is provided protrudes in the coil radial direction from the outermost conductor portion of the other stage. .

本発明によれば、熱放散性、絶縁特性、製造時の作業性に優れ、さらに、小型で短絡時の電磁機械力に強い静止誘導機器コイルが提供される。 According to the present invention, there is provided a static induction device coil that is excellent in heat dissipation, insulation characteristics, and workability during manufacture, and is small and strong against electromagnetic mechanical force during a short circuit.

本発明を実施するための最良の形態を説明する。
以下、本発明の静止誘導機器コイルの実施例について、図面を用いて説明する。 The best mode for carrying out the present invention will be described.
Hereinafter, embodiments of the static induction device coil of the present invention will be described with reference to the drawings.

実施例１を説明する。本実施例は、平角線導体をコイルの円筒径方向に巻付けた段を軸方向に積層し、タップ線を設けて構成したコイルである。図１は、本実施例に適用するコイルの例としてモールドコイル１を示す。巻き始め３をコイル外側の端部から行い、コイル径方向の外周から内周へ向かって複数回巻付けて段を形成したあと、上段へ上がり次に内周から外周へ向かって巻付ける。これを規定の巻数まで繰り返すことでコイルの形状とし、樹脂層２を形成する。 Example 1 will be described. The present embodiment is a coil in which a step in which a flat wire conductor is wound in the cylindrical diameter direction of the coil is laminated in the axial direction and a tap wire is provided. FIG. 1 shows a molded coil 1 as an example of a coil applied to this embodiment. The winding start 3 is performed from the end on the outer side of the coil, and a step is formed by winding a plurality of times from the outer periphery in the coil radial direction toward the inner periphery. By repeating this up to a specified number of turns, a coil shape is formed, and the resin layer 2 is formed.

本実施例の樹脂モールドコイルは、平角線を成形してエッジワイズに曲げ加工を行いながらコイルを成形するものである。特に矩形形状のコイルのときは、平角線を直線部と曲げ部に分け、それぞれ異なる成形方法を行う。たとえば、図２（ａ）（ｂ）に示すコイル成形機を使用し、上下に設置されたローラ５、５の間に平角線１を通し、電線成形部４によりローラ５の角度を変更させることで導体１にＲの癖を付ける。この方法によれば、任意のＲを有する平角線からなる導体１を成形出来、また丸形コイル、矩形コイルとも製作可能である。図３はコイルの成形時の斜視図を示す。 The resin-molded coil according to the present embodiment is for forming a coil while forming a flat wire and bending it edgewise. In particular, in the case of a rectangular coil, the flat wire is divided into a straight portion and a bent portion, and different forming methods are performed. For example, using the coil forming machine shown in FIGS. 2 (a) and 2 (b), the rectangular wire 1 is passed between the rollers 5 and 5 installed at the top and bottom, and the angle of the roller 5 is changed by the wire forming portion 4. Then, attach a ridge of R to conductor 1. According to this method, the conductor 1 made of a rectangular wire having an arbitrary R can be formed, and both a round coil and a rectangular coil can be manufactured. FIG. 3 shows a perspective view when the coil is formed.

かかるコイルにおいて、図４に示すようにコイルをその巻始め部３から巻終わりまで成形し、このコイルからタップ電圧に応じた所定の巻回数よりタップ線を取付ける導体部分（タップ引出し部）６ａ〜６ｅとタップ切換部のタップ端子とをタップ線で接続する。そしてこのタップ線を取付ける位置は、絶縁処理が省けること、コイル内に無用なスペースを作らずに済むことから、コイルの最外周側の導体に取付けることが望ましい。しかしながら、タップ引出し部は必ずしもコイル最外周になるとは限らない。すなわち、タップ引出し部までの巻回数をＴ１、１段当たりのコイル径方向の巻数をＡとすると、ｍを整数として、下記式１又は式２を満たすとき、タップ線引出し部がコイル最外周になる。
Ｔ１＝２ｍＡ（式１）
又は、
Ｔ１＝２ｍＡ＋１（式２） In such a coil, as shown in FIG. 4, the coil is formed from the winding start portion 3 to the winding end, and conductor portions (tap lead portions) 6a to 6 are attached to the tap wire from the coil by a predetermined number of turns corresponding to the tap voltage. 6e and the tap terminal of the tap switching unit are connected by a tap line. The tap wire is attached to the conductor on the outermost peripheral side of the coil because the insulation process can be omitted and unnecessary space is not required in the coil. However, the tap drawing portion is not necessarily the outermost periphery of the coil. That is, when the number of turns to the tap lead-out portion is T1, and the number of turns in the coil radial direction per stage is A, when m is an integer and the following formula 1 or formula 2 is satisfied, the tap wire lead-out portion is on the outermost coil circumference. Become.
T1 = 2 mA (Formula 1)
Or
T1 = 2 mA + 1 (Formula 2)

本実施例では、式１及び式２を満たさないときでも、コイル径方向の巻付け数を減じた段を組み合わせてタップ引出し部がコイル最外周になるよう調整を行う。そのために、ｎを整数として、一般に、
Ｔ１＝２ｍＡ−ｎ（式３）
と表されるので、コイル径方向の巻付け数を１ターン減じた段を、タップ引出し部を形成する段より前に、ｎ個設けることにより、タップ引出し部をコイル最外周にすることができる。もっとも、コイル径方向の巻付け数を１ターン減じた段を（ｎ−１）個設けると、タップ引出し部は、該当する段のコイル最外周より１つ内側となるが、その外周に導体を巻付けずに段上がりをすることも可能であり、そのときは、タップ引出し部の外周には導体が存在しないので、実質的にコイル最外周となる。図４はその模擬図を示しており、タップ引出し部６ａ〜６ｅは、実質的にコイル最外周となっている。 In the present embodiment, even when Expression 1 and Expression 2 are not satisfied, adjustment is performed so that the tap lead-out portion becomes the outermost periphery of the coil by combining stages in which the number of windings in the coil radial direction is reduced. Therefore, generally, n is an integer,
T1 = 2 mA-n (Formula 3)
Therefore, by providing n stages where the number of windings in the coil radial direction is reduced by one turn before the stage for forming the tap extraction portion, the tap extraction portion can be made the outermost periphery of the coil. . However, when (n-1) stages with the number of windings in the coil radial direction being reduced by one turn are provided, the tap lead-out portion is one inside from the outermost coil circumference of the corresponding stage, but a conductor is placed on the outer circumference. It is also possible to step up without winding, and in this case, there is no conductor on the outer periphery of the tap lead-out portion, so that it is substantially the outermost periphery of the coil. FIG. 4 shows a simulated view thereof, and the tap lead portions 6a to 6e are substantially the outermost periphery of the coil.

次に、本発明におけるタップ線引出し方法について述べる。図５は、実施例２のコイルにおけるタップ引出し部の断面を示している。図のように、タップ線を接続しやすくするため、コイル断面の長辺の直線部を延ばし、コイルの他の段の最外周の導体部分よりもコイル径方向に突出させている。特に、モールドコイルの場合、樹脂で導体を覆うため、タップ部は樹脂で容易に絶縁することができる。図６はタップ線引出し後のコイルの斜視図である。図のようにタップ線引出しの数だけ、導体を突出させた構造となる。タップ切換器端子部までの接続は、図７（ａ）（ｂ）のように端子８ａ〜８ｅが付いたリード線９をコイル１のタップ引出し部に溶接して接続させる。 Next, the tap line drawing method in the present invention will be described. FIG. 5 shows a cross section of the tap lead-out portion in the coil of the second embodiment. As shown in the figure, in order to facilitate the connection of the tap wires, the straight part of the long side of the coil cross section is extended and protruded in the coil radial direction from the outermost conductor part of the other stage of the coil. In particular, in the case of a molded coil, since the conductor is covered with resin, the tap portion can be easily insulated with resin. FIG. 6 is a perspective view of the coil after drawing the tap wire. As shown in the figure, the conductor is protruded by the number of tap wire leads. The connection to the tap changer terminal portion is made by welding the lead wire 9 with the terminals 8a to 8e to the tap drawing portion of the coil 1 as shown in FIGS. 7 (a) and 7 (b).

以上実施例で説明したように、本発明によれば、タップ線を設けたコイルをコンパクトに製作することが出来、また絶縁を簡素化することができる。なお、本発明は、変圧器に限らず、コイルを必要とする静止誘導機器すべてに利用可能である。 As described above in the embodiments, according to the present invention, the coil provided with the tap wire can be manufactured in a compact manner, and the insulation can be simplified. In addition, this invention is applicable not only to a transformer but to all the static induction apparatuses which require a coil.

実施例１のコイルにおける巻付け方法を示す断面図。Sectional drawing which shows the winding method in the coil of Example 1. FIG. 実施例１のコイルを成形する手段の一例の正面図と上面図。The front view and top view of an example of the means which shape | molds the coil of Example 1. FIG. 実施例１のコイルにおける成形方法を示す斜視図。FIG. 3 is a perspective view showing a forming method for the coil of the first embodiment. 実施例１のコイルの断面図。Sectional drawing of the coil of Example 1. FIG. 実施例２におけるタップ引出し部のコイル断面図。The coil sectional view of the tap drawer part in Example 2. FIG. 実施例２のコイルの斜視図。The perspective view of the coil of Example 2. FIG. 実施例２におけるタップ端子との接続を示す図と拡大図。The figure which shows the connection with the tap terminal in Example 2, and an enlarged view.

Explanation of symbols

１…導体
２…樹脂層
３…巻始め部
４…電線成形部
５…ローラ
６ａ〜６ｅ…タップ線を取付ける導体部分
７…コイル脚
８ａ〜８ｅ…タップ端子
９…タップ線接続ライン線 DESCRIPTION OF SYMBOLS 1 ... Conductor 2 ... Resin layer 3 ... Winding start part 4 ... Electric wire shaping | molding part 5 ... Roller 6a-6e ... Conductor part 7 which attaches a tap wire ... Coil leg 8a-8e ... Tap terminal 9 ... Tap wire connection line wire

Claims

The conductor is wound a plurality of times from the outer periphery in the coil radial direction toward the inner periphery to form a step, and then stepped up in the coil axial direction and then wound a plurality of times from the inner periphery to the outer periphery in the coil radial direction. forming a, while winding up the desired number of turns, a stationary induction apparatus coil having a tap line,
The coil is formed while forming a flat wire and bending it edgewise,
At least one of the tap wires is drawn from the outermost conductor portion of the stage wound with the number of windings of the conductor per stage being at least one turn less than the other stages ,
The conductor portion is continuously wound without being cut at the place where the tap wire is provided, and the conductor portion where the drawn tap wire is provided protrudes in the coil radial direction from the outermost conductor portion of the other stage. Static induction equipment coil to do.