JP7199606B1 - Static induction device - Google Patents

Static induction device Download PDF

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JP7199606B1
JP7199606B1 JP2022548741A JP2022548741A JP7199606B1 JP 7199606 B1 JP7199606 B1 JP 7199606B1 JP 2022548741 A JP2022548741 A JP 2022548741A JP 2022548741 A JP2022548741 A JP 2022548741A JP 7199606 B1 JP7199606 B1 JP 7199606B1
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flat
insulating coating
insulating
windings
winding
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JPWO2023195126A1 (en
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崇之 西村
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Mitsubishi Electric Corp
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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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof

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Abstract

静止誘導機器は、鉄心(１１０)と、複数の平板状巻線(１３０)とを備える。複数の平板状巻線(１３０)は、鉄心(１１０)の軸方向に並んで配置され、鉄心(１１０)に巻回されている。複数の平板状巻線(１３０)の各々は、導体部(１３１)と、絶縁被覆部(１３３)とを含む。絶縁被覆部(１３３)は、導体部(１３１)にらせん状に巻き付けられて導体部(１３１)を覆っている。複数の平板状巻線(１３０)のうちの少なくとも１つの平板状巻線(１３０)において、絶縁被覆部(１３３)として耐熱性が互いに異なる複数種類の絶縁被覆部(１３３)が継ぎ合わされて導体部(１３１)を覆っている。A stationary induction device comprises an iron core (110) and a plurality of planar windings (130). A plurality of flat windings (130) are arranged side by side in the axial direction of the iron core (110) and wound around the iron core (110). Each of the plurality of flat windings (130) includes a conductor portion (131) and an insulation coating portion (133). The insulating coating portion (133) is spirally wound around the conductor portion (131) to cover the conductor portion (131). In at least one flat winding (130) among the plurality of flat windings (130), a plurality of types of insulation covering (133) having different heat resistances are spliced together as an insulation covering (133) to form a conductor. It covers the part (131).

Description

本開示は、静止誘導機器に関する。 The present disclosure relates to stationary induction equipment.

ガス絶縁静止誘導電器の構成を開示した先行技術文献として、特開平０９－０４５５５１号公報(特許文献１)がある。特許文献１に記載されたガス絶縁静止誘導電器は、鉄心と、複数の巻線とを備える。複数の巻線は、鉄心に巻回されている。複数の巻線が上下に積み重ねられることにより、上下並列巻線が構成されている。複数の巻線は、材質が異なる絶縁被覆層を有する。最も温度が高くなる巻線上部には、温度上昇が小さい巻線下部と比較して、最も耐熱性が高い絶縁被覆層が設けられている。 Japanese Patent Application Laid-Open No. 09-045551 (Patent Document 1) is a prior art document that discloses the configuration of a gas-insulated stationary induction electric appliance. A gas-insulated static induction electric appliance disclosed in Patent Document 1 includes an iron core and a plurality of windings. A plurality of windings are wound around the iron core. Vertical parallel windings are configured by stacking a plurality of windings vertically. The plurality of windings have insulating coating layers made of different materials. An insulating coating layer having the highest heat resistance is provided in the upper part of the winding where the temperature rises the most compared to the lower part of the winding where the temperature rise is small.

特開平０９－０４５５５１号公報JP-A-09-045551

一般に、複数の平板状巻線のうちの１つの平板状巻線において、発熱による温度上昇は各箇所で異なる。また、１つの平板状巻線における導体部は、最も温度が高い箇所に対応した耐熱性を有する絶縁被覆部により被覆される。この場合、巻線の耐熱性を確保することはできるが、１つの平板状巻線の温度が低い箇所において耐熱性の高い高価な絶縁被覆部が過剰に使用される。 Generally, in one flat winding among a plurality of flat windings, the temperature rise due to heat generation differs at each location. In addition, the conductor portion of one flat winding wire is covered with an insulating coating portion having heat resistance corresponding to the portion where the temperature is the highest. In this case, the heat resistance of the winding can be ensured, but an expensive insulating coating with high heat resistance is excessively used in a portion of one flat winding having a low temperature.

本開示は、上記の課題に鑑みてなされたものであって、巻線の耐熱性を確保しつつ、耐熱性の高い高価な絶縁被覆部の使用量を抑制することができる、静止誘導機器を提供することを目的とする。 The present disclosure has been made in view of the above problems, and provides a stationary induction device that can reduce the amount of highly heat-resistant and expensive insulation coating while ensuring the heat resistance of the winding. intended to provide

本開示に基づく静止誘導機器は、鉄心と、複数の平板状巻線とを備える。複数の平板状巻線は、鉄心の軸方向に並んで配置され、鉄心に巻回されている。複数の平板状巻線の各々は、導体部と、絶縁被覆部とを含む。絶縁被覆部は、導体部にらせん状に巻き付けられて導体部を覆っている。複数の平板状巻線のうちの少なくとも１つの平板状巻線において、絶縁被覆部として耐熱性が互いに異なる複数種類の絶縁被覆部が継ぎ合わされて導体部を覆っている。 A stationary induction device according to the present disclosure comprises an iron core and a plurality of planar windings. A plurality of flat windings are arranged side by side in the axial direction of the iron core and wound around the iron core. Each of the plurality of flat windings includes a conductor portion and an insulation coating portion. The insulating coating is spirally wound around the conductor to cover the conductor. In at least one flat winding among the plurality of flat windings, a plurality of types of insulation covering portions having different heat resistances are spliced together to cover the conductor portion as the insulation covering portion.

本開示によれば、複数の平板状巻線のうちの少なくとも１つの平板状巻線において、導体部の各箇所に対応した異なる耐熱性を有する複数種類の絶縁被覆部により導体部を被覆することによって、巻線の耐熱性を確保しつつ、耐熱性の高い高価な絶縁被覆部の使用量を抑制することができる。 According to the present disclosure, in at least one flat winding among a plurality of flat windings, the conductor is covered with a plurality of types of insulation coating portions having different heat resistance corresponding to each location of the conductor. Accordingly, the amount of the expensive insulating coating portion having high heat resistance to be used can be suppressed while ensuring the heat resistance of the winding.

実施の形態１に係る静止誘導機器の構成を示す斜視図である。1 is a perspective view showing the configuration of a stationary induction device according to Embodiment 1. FIG. 実施の形態１に係る静止誘導機器の構成を示す断面図である。1 is a cross-sectional view showing the configuration of a stationary induction device according to Embodiment 1. FIG. 実施の形態１に係る静止誘導機器が備える巻線グループの構成を示す分解斜視図である。4 is an exploded perspective view showing the configuration of a winding group included in the stationary induction device according to Embodiment 1. FIG. 実施の形態１に係る静止誘導機器が備える平板状巻線の構成を示す概略図である。FIG. 2 is a schematic diagram showing the configuration of a flat winding provided in the stationary induction device according to Embodiment 1; 実施の形態１に係る平板状巻線における絶縁被覆部が継ぎ合わせられる箇所の構成を示す概略図である。FIG. 2 is a schematic diagram showing a configuration of a portion where insulating coating portions are spliced together in the flat winding wire according to Embodiment 1; 実施の形態２に係る複数の平板状巻線における絶縁被覆部が継ぎ合わせられる箇所の構成を示す概略図である。FIG. 9 is a schematic diagram showing a configuration of portions where insulating coating portions of a plurality of flat windings according to Embodiment 2 are spliced together;

以下、各実施の形態に係る静止誘導機器について図面を参照して説明する。以下の実施の形態の説明においては、図中の同一または相当部分には同一符号を付して、その説明は繰り返さない。 A stationary induction device according to each embodiment will be described below with reference to the drawings. In the following description of the embodiments, the same reference numerals are given to the same or corresponding parts in the drawings, and the description thereof will not be repeated.

実施の形態１．
図１は、実施の形態１に係る静止誘導機器の構成を示す斜視図である。図２は、実施の形態１に係る静止誘導機器の構成を示す断面図である。図３は、実施の形態１に係る静止誘導機器が備える巻線グループの構成を示す分解斜視図である。なお、図１においては、静止誘導機器内部の構造の理解を容易にするため、タンクを図示していない。Embodiment 1.
FIG. 1 is a perspective view showing the configuration of a stationary induction device according to Embodiment 1. FIG. FIG. 2 is a cross-sectional view showing the configuration of the stationary induction device according to Embodiment 1. FIG. 3 is an exploded perspective view showing a configuration of a winding group included in the stationary induction device according to Embodiment 1. FIG. Note that FIG. 1 does not show a tank in order to facilitate understanding of the internal structure of the stationary induction device.

図１～図３に示すように、本開示の実施の形態１に係る静止誘導機器１００は、車載用変圧器である。本実施の形態に係る静止誘導機器１００は、いわゆる外鉄形変圧器である。静止誘導機器１００は、鉄心１１０と、巻線グループ１２０と、タンク１５０とを備える。 As shown in FIGS. 1 to 3, a stationary induction device 100 according to Embodiment 1 of the present disclosure is a vehicle-mounted transformer. A stationary induction device 100 according to the present embodiment is a so-called shell-type transformer. Stationary induction device 100 includes iron core 110 , winding group 120 and tank 150 .

図１に示すように、鉄心１１０は、主脚部１１１と、側脚部１１２とを含む。側脚部１１２は、主脚部１１１に接続されている。 As shown in FIG. 1, core 110 includes main leg 111 and side leg 112 . The side leg 112 is connected to the main leg 111 .

図１～図３に示すように、巻線グループ１２０は、複数の平板状巻線１３０と、複数の絶縁板１４０とを含む。 As shown in FIGS. 1-3, the winding group 120 includes a plurality of planar windings 130 and a plurality of insulating plates 140. As shown in FIG.

複数の平板状巻線１３０の各々は、鉄心１１０に巻回されている。具体的には、複数の平板状巻線１３０の各々は、主脚部１１１と側脚部１１２との間に通されつつ、主脚部１１１に巻回されている。複数の平板状巻線１３０の各々は、鉄心１１０の軸方向(ＤＲ１方向)に並んで配置されている。 Each of the plurality of flat windings 130 is wound around iron core 110 . Specifically, each of the plurality of flat windings 130 is wound around the main leg portion 111 while passing between the main leg portion 111 and the side leg portion 112 . Each of the plurality of flat windings 130 is arranged side by side in the axial direction (DR1 direction) of iron core 110 .

複数の絶縁板１４０の各々は、複数の平板状巻線１３０において互いに隣り合う平板状巻線１３０同士の間に挟まれて位置している。複数の絶縁板１４０の各々は、互いに隣り合う平板状巻線１３０間を絶縁している。 Each of the plurality of insulating plates 140 is sandwiched between adjacent flat windings 130 in the plurality of flat windings 130 . Each of the plurality of insulating plates 140 insulates between adjacent flat windings 130 .

複数の絶縁板１４０の各々は、絶縁性材料で構成され、たとえば、プレスボードなどの絶縁紙またはポリアミドなどの絶縁性材料などで構成されている。複数の絶縁板１４０の各々は、ＤＲ１方向から見て、略矩形状の外形を有し、中央に、鉄心１１０に挿通される開口が設けられている。 Each of the plurality of insulating plates 140 is made of an insulating material, such as insulating paper such as pressboard or an insulating material such as polyamide. Each of the plurality of insulating plates 140 has a substantially rectangular outer shape when viewed from the DR1 direction, and is provided with an opening through which the iron core 110 is inserted in the center.

複数の絶縁板１４０には、複数のスペーサ１４１が設けられている。複数のスペーサ１４１の各々は、絶縁性材料で構成され、たとえば、プレスボードなどの絶縁紙またはポリプロピレンなどの絶縁樹脂などで構成されている。複数のスペーサ１４１の各々は、互いに対向する平板状巻線１３０および絶縁板１４０に挟まれて図示しない絶縁油が流れる流路１０を構成している。 A plurality of spacers 141 are provided on the plurality of insulating plates 140 . Each of the plurality of spacers 141 is made of an insulating material, such as insulating paper such as pressboard or insulating resin such as polypropylene. Each of the plurality of spacers 141 is sandwiched between the flat windings 130 and the insulating plate 140 facing each other to form a channel 10 through which insulating oil (not shown) flows.

タンク１５０は、鉄心１１０、複数の平板状巻線１３０および複数の絶縁板１４０を収容している。タンク１５０には、内部に絶縁油が充填されている。タンク１５０は、タンク１５０内において鉄心１１０の軸方向と直交する方向(ＤＲ２方向)に絶縁油が流れるように構成されている。 Tank 150 accommodates iron core 110 , multiple flat windings 130 and multiple insulating plates 140 . The tank 150 is filled with insulating oil. Tank 150 is configured such that insulating oil flows in a direction (DR2 direction) orthogonal to the axial direction of iron core 110 within tank 150 .

タンク１５０には、循環配管１５１が接続されている。循環配管１５１は、タンク１５０のＤＲ２方向における両端部に接続されている。循環配管１５１には、図示しないポンプおよび冷却容器が設けられている。ポンプが稼働することにより、絶縁油がタンク１５０、循環配管１５１および冷却容器の内部を循環する。絶縁油は、冷却容器において冷却される。 A circulation pipe 151 is connected to the tank 150 . The circulation pipe 151 is connected to both ends of the tank 150 in the DR2 direction. The circulation pipe 151 is provided with a pump and a cooling vessel (not shown). By operating the pump, the insulating oil circulates inside the tank 150, the circulation pipe 151 and the cooling container. The insulating oil is cooled in the cooling vessel.

循環配管１５１の一方からタンク１５０に流入した絶縁油は、ＤＲ２方向に流れる。巻線グループ１２０において、絶縁油は互いに隣接する複数の平板状巻線１３０同士の間に形成された流路１０を流れる。これにより、流路１０に隣接する平板状巻線１３０の熱が絶縁油に移動する。その結果、複数の平板状巻線１３０が冷却される。 The insulating oil that has flowed into the tank 150 from one side of the circulation pipe 151 flows in the DR2 direction. In the winding group 120, the insulating oil flows through the flow paths 10 formed between the plurality of flat windings 130 adjacent to each other. As a result, the heat of the planar winding 130 adjacent to the flow path 10 is transferred to the insulating oil. As a result, the plurality of flat windings 130 are cooled.

図４は、実施の形態１に係る静止誘導機器が備える平板状巻線の構成を示す概略図である。図５は、実施の形態１に係る平板状巻線における絶縁被覆部が継ぎ合わせられる箇所の構成を示す概略図である。なお、図４においては、平板状巻線の構造の理解を容易にするため、導体部が絶縁被覆部により覆われた状態を１本の実線または点線で示す。 FIG. 4 is a schematic diagram showing a configuration of a flat winding provided in the stationary induction device according to Embodiment 1. FIG. FIG. 5 is a schematic diagram showing the configuration of a portion where the insulating coating portion of the flat winding wire according to Embodiment 1 is joined. In FIG. 4, in order to facilitate understanding of the structure of the flat winding, the state in which the conductor is covered with the insulating coating is indicated by one solid line or dotted line.

図４および図５に示すように、複数の平板状巻線１３０の各々は、導体部１３１と、絶縁被覆部１３３とを含む。 As shown in FIGS. 4 and 5 , each of the plurality of flat windings 130 includes a conductor portion 131 and an insulation coating portion 133 .

導体部１３１は、たとえば、銅またはアルミニウムなどにより構成されている。導体部１３１は、平板状に巻回されている。導体部１３１の両端には、端子１３２が設けられている。端子１３２は、隣接する平板状巻線の導体部、または図示しないコンバータなどに接続される。 Conductor portion 131 is made of, for example, copper or aluminum. The conductor portion 131 is wound in a flat plate shape. Terminals 132 are provided at both ends of the conductor portion 131 . The terminal 132 is connected to a conductor portion of an adjacent flat winding, a converter (not shown), or the like.

絶縁被覆部１３３は、導体部１３１にらせん状に巻き付けられて導体部１３１を覆っている。絶縁被覆部１３３は、巻回された導体部１３１のうち、隣り合う導体部１３１間を絶縁している。 The insulating coating portion 133 is spirally wound around the conductor portion 131 to cover the conductor portion 131 . The insulating coating portion 133 insulates adjacent conductor portions 131 among the wound conductor portions 131 .

絶縁被覆部１３３は、たとえば、プレスボードなどの絶縁紙により構成されている。絶縁被覆部１３３は、絶縁紙を使用する場合、単層の絶縁紙により構成されていてもよいし、複数層の絶縁紙により構成されていてもよい。 The insulating coating portion 133 is made of, for example, insulating paper such as pressboard. When insulating paper is used, the insulating covering portion 133 may be configured with a single layer of insulating paper, or may be configured with a plurality of layers of insulating paper.

複数の平板状巻線１３０のうちの少なくとも１つの平板状巻線１３０において、絶縁被覆部１３３として耐熱性が互いに異なる複数種類の絶縁被覆部１３３が継ぎ合わされて導体部１３１を覆っている。具体的には、本実施の形態の当該少なくとも１つの平板状巻線１３０の絶縁被覆部１３３において、第１絶縁被覆部１３４および第２絶縁被覆部１３５が継ぎ合わされて、導体部１３１を覆っている。 In at least one flat winding 130 out of the plurality of flat windings 130 , a plurality of types of insulating coverings 133 having different heat resistances are spliced together to cover the conductor portion 131 as the insulating covering 133 . Specifically, in the insulating coating portion 133 of the at least one flat winding wire 130 of the present embodiment, the first insulating coating portion 134 and the second insulating coating portion 135 are spliced together to cover the conductor portion 131. there is

第１絶縁被覆部１３４は、第２絶縁被覆部１３５より低い耐熱性を有している。具体的には、第１絶縁被覆部１３４は、たとえば、ＪＩＳ規格(ＪＩＳ Ｃ ４００３：２０１０)における、Ａ種の耐熱性を有している。一方、第２絶縁被覆部１３５は、たとえば、Ｂ種の耐熱性を有している。なお、第１絶縁被覆部１３４および第２絶縁被覆部１３５は、耐熱性が互いに異なっていれば、Ａ種またはＢ種の耐熱性に限定されない。 The first insulation coating portion 134 has lower heat resistance than the second insulation coating portion 135 . Specifically, the first insulating coating portion 134 has, for example, A-type heat resistance in the JIS standard (JIS C 4003:2010). On the other hand, the second insulating coating portion 135 has, for example, B-type heat resistance. In addition, the first insulating coating portion 134 and the second insulating coating portion 135 are not limited to the A type or the B type heat resistance as long as the heat resistance is different from each other.

複数種類の絶縁被覆部１３３を含む各平板状巻線１３０において、最も耐熱性が低い絶縁被覆部の配置割合が最も高い。本実施の形態における平板状巻線１３０においては、第２絶縁被覆部１３５より耐熱性が低い第１絶縁被覆部１３４の配置割合が最も高い。 In each flat winding 130 including a plurality of types of insulation coating portions 133, the insulation coating portion having the lowest heat resistance has the highest arrangement ratio. In flat winding 130 according to the present embodiment, first insulation coating portion 134 having lower heat resistance than second insulation coating portion 135 has the highest arrangement ratio.

なお、本実施の形態に係る絶縁被覆部１３３は、第１絶縁被覆部１３４および第２絶縁被覆部１３５の２種類の絶縁被覆部により構成されているが、この構成に限定されず、３種類以上の絶縁被覆部から構成されていてもよい。また、巻線グループ１２０における複数の平板状巻線１３０の全てが耐熱性が互いに異なる複数種類の絶縁被覆部１３３を有していなくてもよい。 In addition, the insulating coating portion 133 according to the present embodiment is configured by two types of insulating coating portions, the first insulating coating portion 134 and the second insulating coating portion 135, but is not limited to this configuration, and three types It may be composed of the insulating coating portion described above. Moreover, not all of the plurality of flat windings 130 in the winding group 120 need to have a plurality of types of insulating coating portions 133 with mutually different heat resistances.

１つの平板状巻線１３０は、１つの平板状巻線１３０の中で透過する磁束量または冷却媒体の流量の違いなどによって、その箇所毎において電圧の印加に伴う発熱による温度上昇にばらつきが生じる。本実施の形態における平板状巻線１３０は、たとえば、平板状巻線１３０の内側において温度が上昇しやすく、外側と比較して高温になる。 Due to differences in the amount of magnetic flux that passes through the flat winding 130 or the flow rate of the cooling medium, the temperature of each flat winding 130 varies due to the heat generated by voltage application. . In the flat winding 130 according to the present embodiment, for example, the inside of the flat winding 130 is likely to be heated, and the temperature is higher than the outside.

この場合、第２絶縁被覆部１３５は、第１絶縁被覆部１３４に対して、１つの平板状巻線１３０の内側に配置される。これにより、絶縁被覆部１３３は、１つの平板状巻線１３０の中において、温度が高い箇所には耐熱性の高い第２絶縁被覆部１３５により導体部１３１を被覆し、温度が低い箇所には耐熱性の低い第１絶縁被覆部１３４により導体部１３１を被覆することができる。このように、１つの平板状巻線１３０における温度分布に合わせて、種類の異なる絶縁被覆部１３３を配置させることができる。なお、１つの平板状巻線１３０の内側の温度が外側と比較して低い場合には、第２絶縁被覆部１３５は、第１絶縁被覆部１３４に対して、１つの平板状巻線１３０の外側に配置される。 In this case, the second insulation coating portion 135 is arranged inside one flat winding 130 with respect to the first insulation coating portion 134 . As a result, the insulation coating portion 133 covers the conductor portion 131 with a second insulation coating portion 135 having high heat resistance in a portion where the temperature is high in one flat winding 130, and The conductor portion 131 can be covered with the first insulation covering portion 134 having low heat resistance. In this manner, different types of insulating coating portions 133 can be arranged according to the temperature distribution in one flat winding 130 . In addition, when the temperature inside one flat winding 130 is lower than the outside, the second insulating coating portion 135 is applied to the first insulating covering portion 134 to reduce the temperature of the single flat winding 130 . placed outside.

図５に示すように、第１絶縁被覆部１３４および第２絶縁被覆部１３５は、互いに継目部１３６において継ぎ合わされている。本実施の形態における継目部１３６は、第１絶縁被覆部１３４および第２絶縁被覆部１３５を接着テープ１３７により接着することによって構成されている。なお、第１絶縁被覆部１３４および第２絶縁被覆部１３５を継ぎ合わせる方法は、第１絶縁被覆部１３４および第２絶縁被覆部１３５が互いに接続されていれば、接着テープ１３７による継ぎ合わせ方法に限定されない。 As shown in FIG. 5 , the first insulation covering portion 134 and the second insulation covering portion 135 are joined together at a joint portion 136 . Joint portion 136 in the present embodiment is configured by bonding first insulating coating portion 134 and second insulating coating portion 135 with adhesive tape 137 . The method of joining the first insulating coating portion 134 and the second insulating coating portion 135 is the joining method using the adhesive tape 137 if the first insulating coating portion 134 and the second insulating coating portion 135 are connected to each other. Not limited.

この平板状巻線１３０の製造方法としては、まず、絶縁被覆部１３３に、第１絶縁被覆部１３４と第２絶縁被覆部１３５とを接着テープ１３７によって継ぎ合わせることにより、継目部１３６を形成させる。継目部１３６は、平板状巻線１３０における継目部１３６の配置される箇所が考慮されて形成される。 As a method of manufacturing the flat winding wire 130, first, a joint portion 136 is formed by joining a first insulating coating portion 134 and a second insulating coating portion 135 to an insulating coating portion 133 with an adhesive tape 137. . The seam portion 136 is formed in consideration of the location of the seam portion 136 in the planar winding 130 .

その後、第１絶縁被覆部１３４と第２絶縁被覆部１３５とが継ぎ合わせられた絶縁被覆部１３３を導体部１３１にらせん状に巻き付ける。絶縁被覆部１３３が巻き付けられた導体部１３１は、平板状に形成される。これにより、平板状巻線１３０が、耐熱性が異なる２種類の絶縁被覆部１３３が継ぎ合わされて導体部１３１を覆う状態へ形成される。 After that, the insulating coating portion 133 obtained by splicing the first insulating coating portion 134 and the second insulating coating portion 135 is spirally wound around the conductor portion 131 . The conductor portion 131 around which the insulating coating portion 133 is wound is formed in a flat plate shape. As a result, the planar winding 130 is formed in a state of covering the conductor portion 131 by splicing two types of insulating coating portions 133 having different heat resistances.

本開示の実施の形態１における静止誘導機器１００においては、１つの平板状巻線１３０において、導体部１３１の各箇所に対応した複数種類の絶縁被覆部１３３により導体部１３１を被覆することによって、平板状巻線１３０の耐熱性を確保しつつ、耐熱性の高い高価な絶縁被覆部１３３の使用量を抑制することができる。ひいては、平板状巻線１３０の耐熱性が確保された静止誘導機器１００を廉価に構成することができる。 In the stationary induction device 100 according to Embodiment 1 of the present disclosure, in one flat winding 130, the conductor portion 131 is covered with a plurality of types of insulating coating portions 133 corresponding to respective portions of the conductor portion 131, While securing the heat resistance of the flat winding wire 130, it is possible to reduce the amount of the highly heat-resistant and expensive insulation coating portion 133 used. As a result, the stationary induction device 100 in which the heat resistance of the planar winding 130 is ensured can be configured at a low cost.

本開示の実施の形態１における静止誘導機器１００においては、耐熱性の低い廉価な絶縁被覆部１３３の使用量の割合を最も高くすることによって、耐熱性の高い高価な絶縁被覆部１３３の使用量を抑制することができる。 In the stationary induction device 100 according to Embodiment 1 of the present disclosure, the usage amount of the expensive insulation coating portion 133 with high heat resistance is increased by maximizing the ratio of the usage amount of the inexpensive insulation coating portion 133 with low heat resistance. can be suppressed.

実施の形態２．
以下、実施の形態２に係る静止誘導機器について説明する。実施の形態２に係る静止誘導機器は、平板状巻線の構成のみ実施の形態１に係る静止誘導機器１００と異なるため、他の構成については説明を繰り返さない。Embodiment 2.
A stationary induction device according to Embodiment 2 will be described below. The stationary induction device according to Embodiment 2 differs from stationary induction device 100 according to Embodiment 1 only in the configuration of the flat windings, and thus the description of other configurations will not be repeated.

図６は、実施の形態２に係る複数の平板状巻線における絶縁被覆部が継ぎ合わせられる箇所の構成を示す概略図である。なお、図６においては、平板状巻線の構造の理解を容易にするため、導体部が絶縁被覆部により覆われた状態を１本の実線または点線で示す。 FIG. 6 is a schematic diagram showing a configuration of portions where insulating coating portions of a plurality of flat winding wires are spliced together according to the second embodiment. In FIG. 6, in order to facilitate understanding of the structure of the flat winding, the state in which the conductor is covered with the insulating coating is indicated by one solid line or dotted line.

図６に示すように、実施の形態２に係る静止誘導機器２００においては、複数の平板状巻線２３０のうちの２つ以上の平板状巻線２３０において、複数種類の絶縁被覆部２３３が継ぎ合わされて導体部２３１を覆っている。本実施の形態の各平板状巻線２３０において、絶縁被覆部２３３は、第１絶縁被覆部２３４および第２絶縁被覆部２３５を有する。 As shown in FIG. 6 , in the stationary induction device 200 according to Embodiment 2, two or more flat windings 230 out of the plurality of flat windings 230 are spliced with a plurality of types of insulation coating portions 233 . Together, they cover the conductor portion 231 . In each flat winding 230 of the present embodiment, the insulating coating portion 233 has a first insulating coating portion 234 and a second insulating coating portion 235 .

当該２つ以上の平板状巻線２３０において、各平板状巻線２３０における複数種類の絶縁被覆部２３３の各々の配置が互いに異なっている。具体的には、各平板状巻線２３０は、継目部２３６を有する。一方の平板状巻線２３０ａには、第１継目部２３６ａが設けられている。他方の平板状巻線２３０ｂには、第２継目部２３６ｂが設けられている。第１継目部２３６ａと第２継目部２３６ｂとは、鉄心の軸方向(ＤＲ１方向)から見て、平板状巻線２３０における配置が異なる。これにより、各平板状巻線２３０ａ，２３０ｂにおいて、第１絶縁被覆部２３４および第２絶縁被覆部２３５の各々の配置が互いに異なっている。 In the two or more flat windings 230, the arrangement of each of the plurality of types of insulation coating portions 233 in each flat winding 230 is different. Specifically, each planar winding 230 has a seam 236 . One flat winding 230a is provided with a first joint portion 236a. A second joint portion 236b is provided on the other flat winding 230b. The first joint portion 236a and the second joint portion 236b are arranged differently in the planar winding 230 when viewed from the axial direction (DR1 direction) of the iron core. As a result, the arrangement of the first insulating coating portion 234 and the second insulating coating portion 235 are different from each other in the flat windings 230a and 230b.

本実施の形態において、積層される平板状巻線２３０の位置によって、各平板状巻線２３０の温度分布が異なる。各平板状巻線２３０ａ，２３０ｂの温度分布に合わせて絶縁被覆部２３３の継目部２３６の配置を調整することによって、各平板状巻線２３０ａ，２３０ｂにおける第１絶縁被覆部２３４および第２絶縁被覆部２３５の各々の配置を互いに異ならせることができるため、温度が高い箇所にのみ耐熱性の高い高価な絶縁被覆部２３３を使用することができる。 In this embodiment, the temperature distribution of each flat winding wire 230 differs depending on the position of the flat winding wire 230 that is stacked. By adjusting the arrangement of the joint portion 236 of the insulating coating portion 233 according to the temperature distribution of the flat windings 230a and 230b, the first insulating coating portion 234 and the second insulating coating in the flat windings 230a and 230b are adjusted. Since the arrangement of each of the portions 235 can be made different from each other, it is possible to use the expensive insulating coating portion 233 with high heat resistance only in the places where the temperature is high.

なお、本実施の形態は、絶縁油が鉄心の軸方向と直交する方向(ＤＲ２方向)に沿って流れる場合を示したが、絶縁油の流れる方向は鉄心の軸方向と直交する方向に限定されない。絶縁油が、たとえば、鉄心の軸方向(ＤＲ１方向)に沿って流れていてもよい。この場合、絶縁油と巻線グループとの熱交換によって絶縁油の下流側の平板状巻線が温度が高くなるため、絶縁油の上流側の平板状巻線と比較して、下流側の平板状巻線において高い耐熱性を有する絶縁被覆部の配置割合が大きくなることが望ましい。 Although this embodiment shows the case where the insulating oil flows along the direction (DR2 direction) perpendicular to the axial direction of the core, the direction in which the insulating oil flows is not limited to the direction perpendicular to the axial direction of the core. . Insulating oil may flow, for example, along the axial direction (DR1 direction) of the iron core. In this case, the temperature of the flat winding on the downstream side of the insulating oil increases due to the heat exchange between the insulating oil and the winding group. It is desirable that the arrangement ratio of the insulation coating portion having high heat resistance is increased in the shaped winding.

本開示の実施の形態２における静止誘導機器２００においては、積層される平板状巻線２３０の位置により平板状巻線２３０の温度分布が異なる場合、各平板状巻線２３０に合わせて絶縁被覆部２３３の継目部２３６の配置を調整することによって、各平板状巻線２３０のうちの温度が高い箇所にのみ耐熱性の高い高価な絶縁被覆部２３３を配置することができるため、平板状巻線２３０の耐熱性を確保しつつ、高価な絶縁被覆部２３３の使用量を抑制することができる。ひいては、平板状巻線２３０の耐熱性が確保された静止誘導機器２００を廉価に構成することができる。 In the stationary induction device 200 according to the second embodiment of the present disclosure, when the temperature distribution of the flat windings 230 differs depending on the position of the laminated flat windings 230, the insulating coating portion By adjusting the arrangement of the seams 236 of the flat windings 233, it is possible to dispose the highly heat-resistant and expensive insulating coatings 233 only in those portions of the flat windings 230 where the temperature is high. It is possible to suppress the usage amount of the expensive insulating coating portion 233 while ensuring the heat resistance of 230 . As a result, the stationary induction device 200 in which the heat resistance of the planar winding 230 is ensured can be configured at a low cost.

なお、今回開示した上記実施の形態はすべての点で例示であって、限定的な解釈の根拠となるものではない。したがって、本開示の技術的範囲は、上記した実施の形態のみによって解釈されるものではない。また、請求の範囲と均等の意味および範囲内でのすべての変更が含まれる。上述した実施の形態の説明において、組み合わせ可能な構成を相互に組み合わせてもよい。 It should be noted that the above-described embodiment disclosed this time is an example in all respects and does not serve as a basis for restrictive interpretation. Therefore, the technical scope of the present disclosure should not be interpreted only by the above-described embodiments. In addition, all changes within the meaning and range of equivalents to the scope of claims are included. In the above description of the embodiments, combinable configurations may be combined with each other.

１０ 流路、１００，２００ 静止誘導機器、１１０ 鉄心、１１１ 主脚部、１１２ 側脚部、１２０ 巻線グループ、１３０，２３０，２３０ａ，２３０ｂ 平板状巻線、１３１，２３１ 導体部、１３２ 端子、１３３，２３３ 絶縁被覆部、１３４，２３４ 第１絶縁被覆部、１３５，２３５ 第２絶縁被覆部、１３６，２３６ 継目部、１３７ 接着テープ、１４０ 絶縁板、１４１ スペーサ、１５０ タンク、１５１ 循環配管、２３６ａ 第１継目部、２３６ｂ 第２継目部。 10 flow path, 100,200 stationary induction device, 110 iron core, 111 main leg, 112 side leg, 120 winding group, 130, 230, 230a, 230b flat winding, 131, 231 conductor, 132 terminal, Reference Signs List 133,233 insulating coating portion, 134,234 first insulating coating portion, 135,235 second insulating coating portion, 136,236 joint portion, 137 adhesive tape, 140 insulating plate, 141 spacer, 150 tank, 151 circulation pipe, 236a first seam, 236b second seam;

Claims (3)

鉄心と、
前記鉄心の軸方向に並んで配置され、前記鉄心に巻回された複数の平板状巻線とを備え、
前記複数の平板状巻線の各々は、導体部と、該導体部にらせん状に巻き付けられて前記導体部を覆う絶縁被覆部とを含み、
前記複数の平板状巻線のうちの少なくとも１つの平板状巻線において、前記絶縁被覆部として耐熱性が互いに異なる複数種類の絶縁被覆部が継ぎ合わされて前記導体部を覆っている、静止誘導機器。iron core and
A plurality of flat windings arranged in the axial direction of the iron core and wound around the iron core,
each of the plurality of flat windings includes a conductor portion and an insulating coating portion spirally wound around the conductor portion to cover the conductor portion;
A static induction device, wherein, in at least one flat winding among the plurality of flat windings, a plurality of types of insulating covering portions having different heat resistances are spliced together as the insulating covering portion to cover the conductor portion. . 前記複数の平板状巻線のうちの２つ以上の平板状巻線において、前記複数種類の絶縁被覆部が継ぎ合わされて前記導体部を覆っており、かつ、各平板状巻線における前記複数種類の絶縁被覆部の各々の配置が互いに異なる、請求項１に記載の静止誘導機器。 In at least two flat windings out of the plurality of flat windings, the plurality of types of insulating coating portions are spliced together to cover the conductor portion, and the plurality of types in each flat winding 2. The stationary induction device according to claim 1, wherein the arrangement of each of the insulative covering portions is different from each other. 前記複数種類の絶縁被覆部を含む各平板状巻線において、最も耐熱性が低い絶縁被覆部の配置割合が最も高い、請求項１または請求項２に記載の静止誘導機器。 3. The stationary induction device according to claim 1, wherein the insulating coating portion having the lowest heat resistance has the highest arrangement ratio among the flat windings including the plurality of types of insulating coating portions.
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