JP2018078194A - Stationary induction equipment - Google Patents

Stationary induction equipment Download PDF

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JP2018078194A
JP2018078194A JP2016218947A JP2016218947A JP2018078194A JP 2018078194 A JP2018078194 A JP 2018078194A JP 2016218947 A JP2016218947 A JP 2016218947A JP 2016218947 A JP2016218947 A JP 2016218947A JP 2018078194 A JP2018078194 A JP 2018078194A
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coil
presser
insulator
iron core
pressing
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JP6803726B2 (en
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裕介 ▲陦▼
裕介 ▲陦▼
Yuusuke Shima
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Toshiba Industrial Products and Systems Corp
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Abstract

PROBLEM TO BE SOLVED: To suppress an increase in the size of an entire device while it is possible to strengthen insulation between a coil and a coil pressing hardware.SOLUTION: The stationary induction equipment (transformer 1) includes: an iron core 2 which is fixed to a fixed part 7; a coil 3 mounted on the iron core; coil pressing hardwares 11, 13 for pressing the axial end surface of the coil against the fixed part or the iron core; and coil pressing insulators 12, 14 made of an insulating material which are interposed between the coil pressing hardware and the end surface of the coil. A recess is formed on a pressing surface of the coil pressing hardware side of the coil pressing insulator, and the coil pressing hardware is arranged in the recess.SELECTED DRAWING: Figure 1

Description

本発明の実施形態は、静止誘導機器に関する。   Embodiments described herein relate generally to a stationary guidance device.

静止誘導機器、例えば高電圧受配電設備用のモールド変圧器においては、鉄心にモールドコイルを装着して構成される。このとき、鉄心の上ヨーク部或いは上ヨーク部を固定するクランプに、コイル押え金物を取付け、このコイル押え金物により、厚板ブロック状をなすコイル押え絶縁物（スペーサ）を介してコイルの軸方向端面を押え付けて支持する構成が採用されている（例えば、特許文献１、２参照）。   A static induction device, for example, a molded transformer for a high-voltage power distribution facility, is configured by mounting a mold coil on an iron core. At this time, a coil presser is attached to the upper yoke part of the iron core or a clamp for fixing the upper yoke part, and the coil axial direction of the coil passes through a coil press insulator (spacer) that forms a thick plate block by the coil presser. The structure which presses and supports an end surface is employ | adopted (for example, refer patent document 1, 2).

実開昭５８−１７３２２３号公報Japanese Utility Model Publication No. 58-173223 実開昭５６−１０８２２１号公報Japanese Utility Model Publication No. 56-108221

上記のような変圧器にあっては、コイルの電圧階級や試験電圧が高くなると、コイルとコイル押え金物との間の絶縁を強化する必要がある。具体的には、コイル押え絶縁物を高さ方向に大型化して、コイルとコイル押え金物との沿面離隔距離を大きくするなどの絶縁強化が行われる。ところが、これでは、変圧器全体が高さ方向に大型化してしまう問題がある。   In the transformer as described above, when the voltage class or test voltage of the coil becomes high, it is necessary to strengthen the insulation between the coil and the coil presser. Specifically, insulation reinforcement such as enlarging the coil pressing insulator in the height direction and increasing the creeping separation distance between the coil and the coil pressing metal is performed. However, in this case, there is a problem that the entire transformer is enlarged in the height direction.

そこで、コイルとコイル押え金物との間の絶縁を強化することができながらも、全体の大型化を抑えることができる静止誘導機器を提供する。   In view of this, a static induction device capable of suppressing the increase in size of the whole while providing the insulation between the coil and the coil presser foot can be provided.

実施形態に係る静止誘導機器は、固定部に固定される鉄心と、前記鉄心に装着されたコイルと、前記コイルの軸方向端面を前記固定部又は鉄心に対し押え付けるためのコイル押え金物と、前記コイル押え金物と前記コイルの端面との間に介在される絶縁材製のコイル押え絶縁物とを備え、前記コイル押え絶縁物の前記コイル押え金物側の押え面に凹部が形成されており、該コイル押え金物が凹部内に配置されている。   The stationary induction device according to the embodiment includes an iron core that is fixed to a fixed portion, a coil that is attached to the iron core, and a coil presser fitting that presses an axial end surface of the coil against the fixed portion or the iron core, A coil press insulator made of an insulating material interposed between the coil presser foot and the end surface of the coil, and a recess is formed on the press surface of the coil presser insulator on the coil presser foot side, The coil retainer is disposed in the recess.

第１の実施形態を示すもので、変圧器の全体構成を概略的に示す正面図The front view which shows 1st Embodiment and shows the whole structure of a transformer roughly コイル上端部のコイル押え絶縁物部分の斜視図Perspective view of the coil presser insulator part at the upper end of the coil コイル上端部のコイル押え絶縁物部分の縦断側面図Longitudinal side view of the coil retainer insulator at the upper end of the coil 第２の実施形態を示すもので、コイル押え絶縁物部分の縦断側面図The 2nd Embodiment is shown, and a vertical side view of a coil press insulator part 第３の実施形態を示すもので、コイル押え絶縁物部分の斜視図The perspective view of a coil holding insulator part which shows 3rd Embodiment

以下、高電圧受配電設備用のモールド変圧器に適用したいくつかの実施形態について、図面を参照しながら説明する。複数の実施形態の説明において実質的に同一の構成部位には同一の符号を付し、説明を省略する。   Hereinafter, some embodiments applied to a molded transformer for a high-voltage power distribution facility will be described with reference to the drawings. In the description of the plurality of embodiments, substantially the same components are denoted by the same reference numerals, and description thereof is omitted.

（１）第１の実施形態
図１から図３を参照して、第１の実施形態について述べる。図１は、本実施形態に係る静止誘導機器としての変圧器１の全体構成を概略的に示している。変圧器１は、鉄心２と、この鉄心２に装着されたこの場合３個のコイル３とを備えている。コイル３はモールドコイルから構成されている。前記鉄心２は、図１で左右方向に延びる上ヨーク部４と下ヨーク部５との間に、上下方向に延びてそれらに連結される３本のレグ部６を備えて構成されている。前記コイル３は、各レグ部６に巻装されている。 (1) First Embodiment A first embodiment will be described with reference to FIGS. FIG. 1 schematically shows the overall configuration of a transformer 1 as a stationary induction device according to the present embodiment. The transformer 1 includes an iron core 2 and, in this case, three coils 3 attached to the iron core 2. The coil 3 is composed of a molded coil. The iron core 2 includes three leg portions 6 extending in the vertical direction and connected to the upper yoke portion 4 and the lower yoke portion 5 extending in the left-right direction in FIG. The coil 3 is wound around each leg portion 6.

前記鉄心２は、例えば珪素鋼板を材料とした複数の金属薄板を積層して構成され、その上ヨーク部４は、例えば鋼材からなる固定部としての上部クランプ７により締め付け固定されている。また、同様に、下ヨーク部５は、固定部としての下部クランプ８により締め付け固定されている。また、下ヨーク部５及び下部クランプ８は、台座９上に固定配置されている。尚、鉄心２及び上下部のクランプ７、８並びに台座９は大地電位に接続されている。   The iron core 2 is configured by laminating a plurality of thin metal plates made of, for example, a silicon steel plate, and the upper yoke portion 4 is fastened and fixed by an upper clamp 7 as a fixing portion made of, for example, a steel material. Similarly, the lower yoke portion 5 is fastened and fixed by a lower clamp 8 as a fixing portion. Further, the lower yoke portion 5 and the lower clamp 8 are fixedly disposed on the base 9. The iron core 2, the upper and lower clamps 7 and 8, and the base 9 are connected to the ground potential.

このとき、前記各コイル３の軸方向端面である上端面と、前記上部クランプ７との間には、上部クランプ７（上ヨーク部４）に対して該コイル３の上端面を下方に押え付けるための、金属例えば鋼材製のコイル押え金物１１、及び、絶縁材例え例えばプラスチック製のコイル押え絶縁物１２が設けられる。詳しく図示はしないが、これらコイル押え金物１１及びコイル押え絶縁物１２は、１個のコイル３の上面部に対し、３組が１２０度間隔のほぼ回転対称となるように設けられる。   At this time, the upper end surface of the coil 3 is pressed down against the upper clamp 7 (upper yoke portion 4) between the upper end surface which is the axial end surface of each coil 3 and the upper clamp 7. For this purpose, a coil presser 11 made of metal such as steel and a coil presser insulator 12 made of an insulating material such as plastic are provided. Although not shown in detail, the coil retainer 11 and the coil retainer 12 are provided so that three sets are substantially rotationally symmetric at intervals of 120 degrees with respect to the upper surface portion of one coil 3.

また、各コイル３の下端面と前記下部クランプ８との間にも、同様に、下部クランプ８（下ヨーク部５）に対してコイル３の下端面を上方に押え付ける（受け支持する）ための、コイル押え金物１３及びコイル押え絶縁物１４が設けられる。これらコイル押え金物１３及びコイル押え絶縁物１４も、１個のコイル３に対し３組が設けられ、コイル押え金物１１及びコイル押え絶縁物１２と上下にほぼ対称的に配置されている。   Similarly, between the lower end surface of each coil 3 and the lower clamp 8, similarly, the lower end surface of the coil 3 is pressed upward (received and supported) against the lower clamp 8 (lower yoke portion 5). The coil presser metal 13 and the coil presser insulator 14 are provided. Three sets of the coil presser 13 and the coil presser insulator 14 are also provided for one coil 3 and are arranged substantially symmetrically with the coil presser 11 and the coil presser insulator 12 in the vertical direction.

以下、それらを代表させて、上部のコイル押え金物１１及びコイル押え絶縁物１２の構成について、図２及び図３も参照して詳述する。即ち、図２、図３に示すように、前記コイル押え金物１１は、長方形の板状をなす押え板部１１ａと、その押え板部１１ａの上面中心部から上方に延びるボルト部１５を一体的に有している。そして、前記上部クランプ７には、前記コイル押え金物１１（ボルト部１５）を支持するための取付金具１６が溶接等により固着されている。この取付金具１６は、側面Ｌ字形の折曲形状を備え、その水平方向に延出する部分には、前記ボルト部１５が上下に挿通可能な挿通孔１６ａ（図３参照）が形成されている。   Hereinafter, the configurations of the upper coil presser 11 and the coil presser insulator 12 will be described in detail with reference to FIGS. That is, as shown in FIG. 2 and FIG. 3, the coil presser 11 is integrally formed of a presser plate portion 11a having a rectangular plate shape and a bolt portion 15 extending upward from the center of the upper surface of the presser plate portion 11a. Have. A mounting bracket 16 for supporting the coil presser 11 (bolt portion 15) is fixed to the upper clamp 7 by welding or the like. The mounting bracket 16 has a side L-shaped bent shape, and an insertion hole 16a (see FIG. 3) through which the bolt portion 15 can be inserted vertically is formed in a portion extending in the horizontal direction. .

前記コイル押え金物１１は、ボルト部１５を挿通孔１６ａに下方から挿通した状態とされ、該ボルト部１５に螺合された２個のナット１７、１７により、取付金具１６を上下から挟むようにして取付けられている。このとき、ボルト部１５に対して２個のナット１７、１７を螺進退させて上下位置を変更することにより、取付金具１６に対するコイル押え金物１１の上下方向の位置（下方への押え付け力）を調整することができる。   The coil presser 11 is attached in such a manner that the bolt portion 15 is inserted through the insertion hole 16a from below and the mounting bracket 16 is sandwiched from above and below by the two nuts 17 and 17 screwed into the bolt portion 15. It has been. At this time, the vertical position of the coil presser 11 with respect to the mounting bracket 16 (downward pressing force) is obtained by screwing the two nuts 17 and 17 back and forth with respect to the bolt portion 15 to change the vertical position. Can be adjusted.

これに対し、前記コイル押え絶縁物１２は、合成樹脂例えばポリエステル樹脂から、全体として直方体のブロック状に構成されている。このとき、コイル押え絶縁物１２の上面の縦横寸法は、前記コイル押え金物１１の押え板部１１ａよりも大きく構成されており、本実施形態では、コイル押え絶縁物１２の上面部には、コイル押え金物１１の押え板部１１ａが配置収容可能な長方形状の凹部１８が形成されている。また、凹部１８の深さ寸法は、押え板部１１ａの厚み寸法よりも大きく構成されている。更に本実施形態では、コイル押え絶縁物１２は、上下２カ所に位置して、外周面（４つの側面）全体から水平方向に延出するように、薄肉のフランジ状をなす襞部１９が一体的に設けられている。   On the other hand, the coil retainer insulator 12 is composed of a synthetic resin, for example, a polyester resin, in the form of a rectangular parallelepiped block as a whole. At this time, the vertical and horizontal dimensions of the upper surface of the coil presser insulator 12 are configured to be larger than the presser plate portion 11a of the coil presser metal 11, and in this embodiment, the upper surface portion of the coil presser insulator 12 has a coil A rectangular recess 18 in which the presser plate portion 11a of the presser foot 11 can be disposed and accommodated is formed. Moreover, the depth dimension of the recessed part 18 is comprised larger than the thickness dimension of the pressing board part 11a. Furthermore, in this embodiment, the coil retainer insulator 12 is positioned at two locations on the upper and lower sides, and the flange portion 19 having a thin flange shape is integrally formed so as to extend horizontally from the entire outer peripheral surface (four side surfaces). Provided.

上記構成のコイル押え絶縁物１２は、上から見て、長手方向を、コイル３の上面の半径方向に沿うようにしながら、１２０度間隔の回転対称となるように、３カ所に配置される。そして、その状態で、コイル押え金物１１により、上部クランプ７に対して下方つまりコイル３の上端面に押し付けられ、コイル３を保持する。このとき、コイル押え金物１１の押え板部１１ａが、凹部１８内に配置され、凹部１８の底面を下方に押し付けるようになっている。   The coil press insulators 12 having the above-described configuration are arranged at three positions so that the longitudinal direction is along the radial direction of the upper surface of the coil 3 as viewed from above, and the rotational symmetry is 120 degrees apart. In this state, the coil presser 11 is pressed downward, that is, against the upper end surface of the coil 3 with respect to the upper clamp 7 to hold the coil 3. At this time, the presser plate portion 11a of the coil presser 11 is arranged in the recess 18 so as to press the bottom surface of the recess 18 downward.

尚、詳しい説明は省略するが、前記コイル押え金物１３及びコイル押え絶縁物１４についても、上記コイル押え金物１１及びコイル押え絶縁物１２とほぼ同等（上下に対称的な）の構成を備えている。また、図示はしないが、上記構成の変圧器１は、絶縁油や絶縁ガスなどの絶縁冷却媒体が充填されたタンク内に収納されて使用される。   Although not described in detail, the coil presser 13 and the coil presser insulator 14 are also substantially the same as the coil presser 11 and the coil presser insulator 12 (vertically symmetrical). . Moreover, although not shown in figure, the transformer 1 of the said structure is accommodated and used for the tank filled with insulating cooling media, such as insulating oil and insulating gas.

上記構成の変圧器１にあっては、コイル押え金物１１とコイル３の上端面との間に介在されるコイル押え絶縁物１２が絶縁スペーサとなって、それらの間の絶縁が図られる。このとき、コイル押え絶縁物１２には、凹部１８が形成されており、その凹部１８内に、コイル押え金物１１が配置される形態とされている。これにより、凹部１８の深さに相当する分だけ、コイル３とコイル押え金物１１との沿面放電におけるバーリア効果を期待できるので、その分、絶縁を強化することができる。しかも、コイル押え絶縁物１２全体を高さ方向に大型化することなく済ませることができる。   In the transformer 1 having the above configuration, the coil retainer insulator 12 interposed between the coil retainer 11 and the upper end surface of the coil 3 serves as an insulation spacer, and insulation between them is achieved. At this time, a recess 18 is formed in the coil retainer insulator 12, and the coil retainer 11 is arranged in the recess 18. Thereby, since the bar rear effect in the creeping discharge of the coil 3 and the coil presser 11 can be expected by an amount corresponding to the depth of the recess 18, the insulation can be strengthened accordingly. In addition, the entire coil pressing insulator 12 can be eliminated without increasing the size in the height direction.

従って、本実施形態の変圧器１によれば、コイル３とコイル押え金物１１との間の絶縁を強化することができながらも、全体の大型化を抑えることができるという優れた効果を得ることができる。また、特に本実施形態では、コイル押え絶縁物１２の外周面に襞部１９を設ける構成としている。この襞部１９によって、コイル３とコイル押え金物１１との沿面絶縁距離をより大きくすることができ、高さ方向の大型化を招くことなく、絶縁性能をより高めることができる。   Therefore, according to the transformer 1 of this embodiment, it is possible to obtain an excellent effect that the overall size can be suppressed while the insulation between the coil 3 and the coil presser 11 can be strengthened. Can do. In particular, in the present embodiment, the flange portion 19 is provided on the outer peripheral surface of the coil retainer insulator 12. By this flange portion 19, the creeping insulation distance between the coil 3 and the coil presser 11 can be further increased, and the insulation performance can be further enhanced without causing an increase in the size in the height direction.

ちなみに、本発明者は、本実施形態の変圧器１に対し雷インパルス試験、交流耐電圧試験を行った。その結果、コイル押え金物１１とコイル３との間の部分放電の発生を十分に抑えられることが明らかとなった。これにより、部分放電が進展して全路破壊に至ることを防ぐことができ、ひいては、変圧器１を高耐圧化することが可能となった。   Incidentally, the present inventor conducted a lightning impulse test and an AC withstand voltage test on the transformer 1 of the present embodiment. As a result, it was revealed that the occurrence of partial discharge between the coil presser 11 and the coil 3 can be sufficiently suppressed. As a result, it is possible to prevent the partial discharge from progressing and destroy the entire path, and as a result, it is possible to increase the breakdown voltage of the transformer 1.

（２）第２、第３の実施形態、その他の実施形態
図４は、第２の実施形態を示すものであり、上記第１の実施形態と異なる点は、コイル押え絶縁物２１の構成にある。即ち、コイル押え絶縁物２１は、絶縁材例えば合成樹脂から直方体のブロック状に構成され、その外周面には襞部２２が設けられている。このコイル押え絶縁物２１の上面はフラットであり、コイル押え絶縁物２２の上面の寸法は、コイル押え金物１１の押え板部１１ａよりも大きく構成されている。コイル押え金物１１の押え板部１１ａは、コイル押え絶縁物１２の上面に宛がわれて、該コイル絶縁物２１を下方に押え付けるようになっている。 (2) Second and Third Embodiments and Other Embodiments FIG. 4 shows the second embodiment. The difference from the first embodiment is the configuration of the coil retainer insulator 21. is there. That is, the coil retainer insulator 21 is formed in a rectangular parallelepiped block shape from an insulating material, for example, synthetic resin, and a flange portion 22 is provided on the outer peripheral surface thereof. The upper surface of the coil presser insulator 21 is flat, and the dimension of the upper surface of the coil presser insulator 22 is configured to be larger than the presser plate portion 11 a of the coil presser metal 11. The presser plate portion 11a of the coil presser 11 is addressed to the upper surface of the coil presser insulator 12, and presses the coil insulator 21 downward.

そして、本実施形態では、コイル押え絶縁物２１の上面には、コイル押え金物１１のコイル押え絶縁物２１を押えている部分である押え板部１１ａの周囲を覆う絶縁シール部材２３が設けられている。この絶縁シール部材２３は、例えば常温硬化型シリコーンゴムコンパウンドからなり、１のコイル押え絶縁物２１に宛がわれた押え板部１１ａの周囲に必要な厚みで塗布した後、常温で硬化させることにより、コイル押え絶縁物２１の上面から連続して立ち上がるようにして、押え板部１１ａの周囲全体を囲む矩形枠状に設けられている。尚、押え板部１１ａの上面側にも絶縁シール部材２３を塗布しても良い。   And in this embodiment, the insulating seal member 23 which covers the circumference | surroundings of the presser plate part 11a which is the part which is pressing the coil presser insulator 21 of the coil presser metal object 11 is provided in the upper surface of the coil presser insulator 21. Yes. The insulating seal member 23 is made of, for example, a room temperature curing type silicone rubber compound, and is applied at a necessary thickness around the presser plate portion 11a addressed to one coil presser insulator 21, and then cured at room temperature. The coil presser insulator 21 is provided in a rectangular frame shape surrounding the entire periphery of the presser plate portion 11a so as to rise continuously from the upper surface. Note that the insulating seal member 23 may also be applied to the upper surface side of the presser plate portion 11a.

上記構成においては、コイル押え金物１１の押え板部１１ａの周囲が、絶縁シール部２３材により覆われているので、コイル３とコイル押え金物１１との間の電界を緩和することができ、絶縁を強化することができる。コイル押え絶縁物２１を高さ方向に大型化することもない。従って、この第２の実施形態によっても、コイル３とコイル押え金物１１との間の絶縁を強化することができながらも、全体の大型化を抑えることができるという優れた効果を得ることができる。また、コイル押え絶縁物２１の外周面に襞部２２を設ける構成としたので、絶縁性能をより高めることができる。   In the above configuration, since the periphery of the holding plate portion 11a of the coil presser 11 is covered with the insulating seal portion 23 material, the electric field between the coil 3 and the coil presser 11 can be relaxed, and the insulation Can be strengthened. The coil retainer insulator 21 is not increased in size in the height direction. Therefore, according to the second embodiment, it is possible to obtain an excellent effect that the overall size can be suppressed while the insulation between the coil 3 and the coil presser 11 can be strengthened. . Moreover, since it was set as the structure which provides the collar part 22 in the outer peripheral surface of the coil holding | maintenance insulator 21, insulation performance can be improved more.

図５は、第３の実施形態を示すものであり、上記第１の実施形態と異なる点は、コイル押え絶縁物３１の構成にある。このコイル押え絶縁物３１は、絶縁材例えばポリエステル樹脂から、全体として直方体のブロック状に構成されていると共に、その上面部には、コイル押え金物１１の押え板部１１ａが配置収容可能な長方形状の凹部３２が形成されている。そそて、本実施形態では、襞部が存在せず、コイル押え絶縁物３１の外周の４つの側面はフラットな形態とされている。   FIG. 5 shows a third embodiment. The difference from the first embodiment is the configuration of the coil retainer insulator 31. The coil retainer insulator 31 is made of an insulating material such as polyester resin in the form of a rectangular parallelepiped block as a whole, and the upper surface thereof has a rectangular shape in which the retainer plate portion 11a of the coil retainer 11 can be disposed and accommodated. The recess 32 is formed. Therefore, in the present embodiment, there are no flanges, and the four side surfaces of the outer periphery of the coil presser insulator 31 are flat.

このようなコイル押え絶縁物３１にあっても、コイル押え金物１１の押え板部１１ａはが配置される凹部３２を備えることにより、上記各実施形態と同様に、コイル３とコイル押え金物１１との間の絶縁を強化することができながらも、全体の大型化を抑えることができるという優れた効果を得ることができる。襞部を設けずに済むので、その分、コイル押え絶縁物３１の構造が簡単になり、安価に製作できるものとなる。   Even in such a coil presser insulator 31, the presser plate part 11 a of the coil presser metal 11 is provided with the recess 32 in which the coil presser 11 is disposed, so that the coil 3, the coil presser metal 11, and the like, as in the above embodiments. While the insulation between the two can be reinforced, it is possible to obtain an excellent effect that the enlargement of the whole can be suppressed. Since it is not necessary to provide the flange portion, the structure of the coil retainer insulator 31 is simplified correspondingly and can be manufactured at low cost.

尚、上記した実施形態では詳しく説明しなかったが、コイル３の下部のコイル押え絶縁物（絶縁スペーサ）については、上部と同様にボルト部を有するコイル押え金物や取付金具を用いて設けるようにしても良い。或いは、コイル押え絶縁物を、コイル押え金物等を用いずに、下部クランプ上に載置状に設置し、その上面でコイルの下端面を受けるような構成としても良い。上記各実施形態では三相変圧器を例示して説明したが、これに限らず、単相変圧器であっても良い。静止誘導機器としては、変圧器に限らず、例えばリアクトルに適用することもできる。   Although not described in detail in the above embodiment, the coil retainer insulator (insulation spacer) at the lower part of the coil 3 is provided using a coil retainer having a bolt part and a mounting bracket as in the upper part. May be. Or it is good also as a structure which installs a coil press insulator on a lower clamp, without using a coil press metal etc., and receives the lower end surface of a coil in the upper surface. In the above embodiments, a three-phase transformer has been described as an example. However, the present invention is not limited to this, and a single-phase transformer may be used. The static induction device is not limited to a transformer, and can be applied to, for example, a reactor.

その他、コイル押え金物の形状や取付構造、さらには、コイル押え絶縁物の材質や形状、構造などについても、様々な変更が可能である。以上説明したいくつかの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。   In addition, various changes can be made to the shape and mounting structure of the coil retainer, and the material, shape, and structure of the coil retainer insulator. The several embodiments described above have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

図面中、１は変圧器、２は鉄心、３はコイル、７は上部クランプ（固定部）、１１、１３はコイル押え金物、１１ａは押え板部、１２、１４、２１、３１はコイル押え絶縁物、１８、３２は凹部、１９、２２は襞部、２３は絶縁シール部材を示す。   In the drawings, 1 is a transformer, 2 is an iron core, 3 is a coil, 7 is an upper clamp (fixed part), 11 and 13 are coil presser fittings, 11a is a presser plate part, 12, 14, 21, and 31 are coil presser insulations. , 18 and 32 are recesses, 19 and 22 are flanges, and 23 is an insulating seal member.

Claims (3)

固定部に固定される鉄心と、
前記鉄心に装着されたコイルと、
前記コイルの軸方向端面を前記固定部又は鉄心に対し押え付けるためのコイル押え金物と、
前記コイル押え金物と前記コイルの端面との間に介在される絶縁材製のコイル押え絶縁物とを備え、
前記コイル押え絶縁物の前記コイル押え金物側の押え面に凹部が形成されており、該コイル押え金物が凹部内に配置されている静止誘導機器。 An iron core fixed to the fixed part;
A coil mounted on the iron core;
A coil presser for pressing the axial end face of the coil against the fixed part or the iron core;
A coil retainer made of an insulating material interposed between the coil retainer and the end face of the coil;
A stationary induction device in which a recess is formed in a pressing surface of the coil presser insulator on the side of the coil presser, and the coil presser is disposed in the recess. 固定部に固定される鉄心と、
前記鉄心に装着されたコイルと、
前記コイルの軸方向端面を前記固定部又は鉄心に対し押え付けるためのコイル押え金物と、
前記コイル押え金物と前記コイルの端面との間に介在される絶縁材製のコイル押え絶縁物と、
前記コイル押え金物の前記コイル押え絶縁物を押えている部分の周囲を覆う絶縁シール部材とを備えてなる静止誘導機器。 An iron core fixed to the fixed part;
A coil mounted on the iron core;
A coil presser for pressing the axial end face of the coil against the fixed part or the iron core;
A coil retainer made of an insulating material interposed between the coil retainer and the end face of the coil;
A stationary induction device comprising an insulating seal member that covers a periphery of a portion of the coil presser foot that holds the coil presser insulator. 前記コイル押え絶縁物の外周面には、襞部が設けられている、請求項１又は２に記載の静止誘導機器。
The stationary induction device according to claim 1, wherein a flange portion is provided on an outer peripheral surface of the coil presser insulator.
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JP2023501961A (en) * 2019-10-31 2023-01-20 ヒタチ・エナジー・スウィツァーランド・アクチェンゲゼルシャフト Transformer Coil Block Design for Seismic Applications

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JP2020043193A (en) * 2018-09-10 2020-03-19 東芝インフラシステムズ株式会社 Mold type static induction device
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JP2023501961A (en) * 2019-10-31 2023-01-20 ヒタチ・エナジー・スウィツァーランド・アクチェンゲゼルシャフト Transformer Coil Block Design for Seismic Applications
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