JP2020161576A

JP2020161576A - Transformer

Info

Publication number: JP2020161576A
Application number: JP2019057623A
Authority: JP
Inventors: 裕樹清宮; Yuki Kiyomiya; 智一宮田; Tomokazu Miyata
Original assignee: Fuji Electric Co Ltd
Current assignee: Fuji Electric Co Ltd
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2020-10-01
Anticipated expiration: 2039-03-26
Also published as: JP7211195B2

Abstract

To suppress instability in supporting a coil even if horizontal force is applied to the coil.SOLUTION: A transformer is configured by comprising a coil 20 which is disposed so as to be wound around a core 10 and of which an axial direction is turned vertical, a frame 30 which is disposed at both upper and lower sides of the coil, and a holding member 40 which is provided between the frame and the coil and holds the coil. The holding member 40 includes multiple laminate members 43 which are laminated in a vertical direction, and a stationary member 44 which is disposed while being held between the multiple laminate members 43 and the coil 20. Among the multiple laminate members 43, a laminate member 43 at a position closest to the coil 20 is defined as a coil-side laminate member 43A. The stationary member 44 includes: a first support surface 44a supporting the coil 20 from a top face side; a second support surface 44b supporting the coil-side laminate member 43A from a bottom face side; a third support surface 44c supporting the coil 20 from a side face side; and a fourth support surface 44d supporting the coil-side laminate member 43A from the side face side.SELECTED DRAWING: Figure 4

Description

本発明は、変圧器に関し、特に、巻線を軸方向両側から保持部材で保持することができる変圧器に関する。 The present invention relates to a transformer, and more particularly to a transformer in which windings can be held by holding members from both sides in the axial direction.

変圧器は、電磁誘導を利用して交流電力の電圧を変換する機器であり、磁気回路を構成する鉄心と、電気回路を構成する巻線（コイル）とを備えている。このような変圧器としては、例えば、鉄心及び巻線がフレーム部材（締付部材）によって支持される構成を採用したものが知られている（例えば、特許文献１参照）。特許文献１のフレーム部材は、複数の電磁鋼板を積層した鉄心の上下両側において、鉄心を積層方向両側から締め付けて支持している。特許文献１では、フレーム部材と巻線の上下両端部との間に保持部材（締付部材）が介挿され、かかる保持部材を介して巻線が上下方向両側から支持されている。 A transformer is a device that converts the voltage of AC power by using electromagnetic induction, and includes an iron core that constitutes a magnetic circuit and a winding (coil) that constitutes an electric circuit. As such a transformer, for example, a transformer having a structure in which an iron core and a winding are supported by a frame member (tightening member) is known (see, for example, Patent Document 1). The frame member of Patent Document 1 supports the iron core by tightening the iron core from both sides in the stacking direction on both the upper and lower sides of the iron core in which a plurality of electromagnetic steel plates are laminated. In Patent Document 1, a holding member (tightening member) is inserted between the frame member and the upper and lower ends of the winding, and the winding is supported from both sides in the vertical direction via the holding member.

また、特許文献１にあっては、保持部材として、板状をなす複数の絶縁部材を鉛直方向に積層した構成も開示されている。 Further, Patent Document 1 also discloses a configuration in which a plurality of plate-shaped insulating members are laminated in the vertical direction as a holding member.

特開２０１５−８１７４号公報Japanese Unexamined Patent Publication No. 2015-8174

上記のように複数の絶縁部材を積層した保持部材では、地震等の発生によって巻線に水平方向の力が加わると、それぞれの絶縁部材にて水平方向にずれや傾きが生じ易くなり、巻線を安定して支持できなくなる、という問題がある。 In the holding member in which a plurality of insulating members are laminated as described above, when a horizontal force is applied to the winding due to an earthquake or the like, each insulating member is likely to be displaced or tilted in the horizontal direction, and the winding There is a problem that it cannot be supported stably.

本発明は、このような問題に鑑みてなされたものであり、巻線に水平方向の力が加わっても、巻線の支持が不安定になることを抑制することができる変圧器を提供することを目的の一つとする。 The present invention has been made in view of such a problem, and provides a transformer capable of suppressing unstable support of a winding even when a horizontal force is applied to the winding. That is one of the purposes.

本発明における一態様の変圧器は、鉄心と、該鉄心に巻回されるように配置されて軸方向が上下方向に向けられた巻線と、該巻線の上下両側に配置されるフレームと、該フレームと前記巻線との間に設けられて該巻線を保持する保持部材とを備えた変圧器であって、前記保持部材は、上下方向に積層される複数の積層部材と、該複数の積層部材と前記巻線とで挟まれて配置される固定部材とを備え、前記複数の積層部材のうち、前記巻線に最も近い位置の積層部材を巻線側積層部材とし、前記固定部材は、前記巻線を上面側又は下面側から支持する第１支持面と、前記第１支持面の裏面側に設けられ、前記巻線側積層部材を支持する第２支持面と、前記巻線を側面側から支持する第３支持面と、前記巻線側積層部材を側面側から支持する第４支持面とを備えていることを特徴とする。 One aspect of the transformer in the present invention includes an iron core, a winding arranged so as to be wound around the iron core and whose axial direction is directed in the vertical direction, and frames arranged on both upper and lower sides of the winding. A transformer provided between the frame and the winding and holding the winding, the holding member includes a plurality of laminated members laminated in the vertical direction and the laminated member. It is provided with a plurality of laminated members and a fixing member arranged so as to be sandwiched between the windings, and among the plurality of laminated members, the laminated member at a position closest to the winding is used as a winding side laminated member and is fixed. The member includes a first support surface that supports the winding from the upper surface side or the lower surface side, a second support surface that is provided on the back surface side of the first support surface and supports the winding side laminated member, and the winding. It is characterized by including a third support surface that supports the wire from the side surface side and a fourth support surface that supports the winding side laminated member from the side surface side.

本発明によれば、固定部材が第４支持面を有するので、かかる第４支持面によって積層部材を側面から支持することができる。これにより、地震等で巻線に水平方向の力が作用しても、複数の積層部材にて水平方向へのずれや傾きが発生することを規制でき、巻線の支持の安定化を図ることができる。 According to the present invention, since the fixing member has the fourth support surface, the laminated member can be supported from the side surface by the fourth support surface. As a result, even if a horizontal force acts on the winding due to an earthquake or the like, it is possible to regulate the occurrence of horizontal displacement or inclination in a plurality of laminated members, and to stabilize the support of the winding. Can be done.

実施の形態に係る変圧器を模式的に表す部分正面断面図である。It is a partial front sectional view schematically showing the transformer which concerns on embodiment. 巻線を保持する準備段階の上部保持部材を一部縦断面視した説明図である。It is explanatory drawing which took a part of the upper holding member of the preparatory stage which holds a winding with a vertical cross section. 固定部材及び積層部材の概略斜視図である。It is a schematic perspective view of a fixing member and a laminated member. 巻線を保持した状態の上部保持部材を一部縦断面視した説明図である。It is explanatory drawing in which the upper holding member in a state of holding a winding is partially seen in a vertical cross section.

以下、本発明の一実施の形態に係る変圧器について、添付の図面を参照しながら詳細に説明する。なお、以下においては、本発明に係る変圧器をモールド変圧器とした場合について説明する。しかしながら、本発明は、モールド変圧器に限定されるものではなく適宜変更が可能である。例えば、モールド変圧器以外の乾式変圧器（例えば、Ｈ種乾式変圧器）やガス絶縁変圧器及び油入変圧器に適用することもできる。 Hereinafter, the transformer according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following, a case where the transformer according to the present invention is a molded transformer will be described. However, the present invention is not limited to the molded transformer and can be changed as appropriate. For example, it can be applied to a dry transformer other than a molded transformer (for example, a class H dry transformer), a gas-insulated transformer, and an oil-immersed transformer.

図１は、実施の形態に係る変圧器を模式的に表す部分正面断面図である。図１に示す変圧器１は、磁気回路を構成する鉄心１０と、電気回路を構成する巻線（コイル）２０と、鉄心１０及び巻線２０を支持するフレーム３０とを備えて構成されている。図１では、１つの巻線２０を図示したが、３相３脚、３相５脚等の変圧器１の構造に応じて巻線２０が複数設けられる。 FIG. 1 is a partial front sectional view schematically showing a transformer according to an embodiment. The transformer 1 shown in FIG. 1 includes an iron core 10 constituting a magnetic circuit, a winding (coil) 20 constituting an electric circuit, and a frame 30 supporting the iron core 10 and the winding 20. .. In FIG. 1, one winding 20 is shown, but a plurality of windings 20 are provided according to the structure of the transformer 1 such as three-phase three-legged and three-phase five-legged.

鉄心１０は、電磁鋼板を積層及び接合する構成を例示でき、脚部１１と、脚部１１の上下位置に接合される上ヨーク部１２及び下ヨーク部１３とを備えている。 The iron core 10 can exemplify a configuration in which electromagnetic steel plates are laminated and joined, and includes a leg portion 11 and an upper yoke portion 12 and a lower yoke portion 13 joined at a vertical position of the leg portion 11.

巻線２０は、脚部１１の周りに巻回されるように配置されている。巻線２０は、内側巻線２１と、内側巻線２１の外側に同心となるように設けられた外側巻線２２とを有し、各巻線２１、２２の全表面が樹脂又は樹脂を含んだ絶縁機材で被覆されている。被覆する樹脂としては、例えば、耐熱性及び電気絶縁性に優れたエポキシ樹脂が用いられる。ここで、巻線２０の軸方向は、円筒状となる巻線２０の中心軸位置が延在する方向であり、図１における上下方向に向けられている。巻線２０は、後述する保持部材４０を介してフレーム３０との間で位置決めされる。 The winding 20 is arranged so as to be wound around the leg 11. The winding 20 has an inner winding 21 and an outer winding 22 provided concentrically on the outer side of the inner winding 21, and the entire surfaces of the windings 21 and 22 contain resin or resin. It is covered with insulating equipment. As the resin to be coated, for example, an epoxy resin having excellent heat resistance and electrical insulation is used. Here, the axial direction of the winding 20 is a direction in which the central axis position of the winding 20 having a cylindrical shape extends, and is oriented in the vertical direction in FIG. The winding 20 is positioned with the frame 30 via a holding member 40 described later.

フレーム３０は、鉄心１０の上端部に設けられた上部フレーム３１と、鉄心１０の下端部に設けられた下部フレーム３２とを備えている。 The frame 30 includes an upper frame 31 provided at the upper end of the iron core 10 and a lower frame 32 provided at the lower end of the iron core 10.

上部フレーム３１及び下部フレーム３２は、鉄心１０の図１中紙面直交方向両側にそれぞれ設けられ、図１では紙面奥行側の各フレーム３１、３２が不図示となる。上部フレーム３１によって鉄心１０の上部領域が、下部フレーム３２によって鉄心１０の下部領域が挟み込まれるようにして支持される。各フレーム３１、３２は、特に限定されるものでないが、本実施の形態では断面がＬ字状に形成されて長手方向に延出する鋼材や板金加工材等の金属構造物により構成される。 The upper frame 31 and the lower frame 32 are provided on both sides of the iron core 10 in the direction orthogonal to the middle paper surface in FIG. 1, respectively, and the frames 31 and 32 on the depth side of the paper surface are not shown in FIG. The upper region of the iron core 10 is supported by the upper frame 31, and the lower region of the iron core 10 is supported by the lower frame 32. The frames 31 and 32 are not particularly limited, but in the present embodiment, they are made of a metal structure such as a steel material or a sheet metal processed material having an L-shaped cross section and extending in the longitudinal direction.

ここで、巻線２０の上側に上部フレーム３１が配置され、巻線２０の下側に下部フレーム３２が配置される。各フレーム３１、３２にて水平方向に沿う水平部３１ａ、３２ａが巻線２０側に配置され、該水平部３１ａ、３２ａと巻線２０との間に、巻線２０を保持するための保持部材４０が設けられている。なお、図１では、外側巻線２２に設けた保持部材４０を図示し、内側巻線２１に設けた保持部材４０の図示を省略している。以下において、外側巻線２２に設けた保持部材４０について説明する。 Here, the upper frame 31 is arranged on the upper side of the winding 20, and the lower frame 32 is arranged on the lower side of the winding 20. Horizontal portions 31a and 32a along the horizontal direction of the frames 31 and 32 are arranged on the winding 20 side, and a holding member for holding the winding 20 between the horizontal portions 31a and 32a and the winding 20. 40 is provided. In FIG. 1, the holding member 40 provided on the outer winding 22 is shown, and the holding member 40 provided on the inner winding 21 is not shown. Hereinafter, the holding member 40 provided on the outer winding 22 will be described.

保持部材４０は、外側巻線２２の上面と上部フレーム３１の水平部３１ａとの間に設けられた上部保持部材４１と、巻線２０の下面と下部フレーム３２の水平部３２ａとの間に設けられた下部保持部材４２とを備えている。 The holding member 40 is provided between the upper holding member 41 provided between the upper surface of the outer winding 22 and the horizontal portion 31a of the upper frame 31, and between the lower surface of the winding 20 and the horizontal portion 32a of the lower frame 32. It is provided with a lower holding member 42.

続いて、本実施の形態の上部保持部材４１について、図２ないし図４を参照して説明する。図２は、巻線を保持する準備段階の上部保持部材を一部縦断面視した概略説明図である。図３は、固定部材及び積層部材の概略斜視図である。 Subsequently, the upper holding member 41 of the present embodiment will be described with reference to FIGS. 2 to 4. FIG. 2 is a schematic explanatory view of a part of the upper holding member in the preparatory stage for holding the winding in a vertical cross section. FIG. 3 is a schematic perspective view of the fixing member and the laminated member.

図２及び図３に示すように、上部保持部材４１は、上下方向に積層される複数（本実施の形態では３枚）の積層部材４３と、かかる複数の積層部材４３と外側巻線２２（図３では不図示）の上面とで挟まれて配置される固定部材４４とを備えている。 As shown in FIGS. 2 and 3, the upper holding member 41 includes a plurality of laminated members 43 (three in the present embodiment) laminated in the vertical direction, and the plurality of laminated members 43 and the outer winding 22 (three in the present embodiment). A fixing member 44 is provided so as to be sandwiched between the upper surface and the upper surface (not shown in FIG. 3).

積層部材４３は、最も上方に位置する積層部材４３を除き、上面中央部に凸部４３ａが形成され、下面中央部に凹部４３ｂが形成されている。最も上方に位置する積層部材４３は、上面及び下面を貫通する孔４３ｃが形成されている。複数の積層部材４３を上下方向に積層した場合、凸部４３ａが上方に隣り合う積層部材４３の凹部４３ｂや孔４３ｃに挿入されて嵌合した状態で連結される。なお、積層部材４３の上下方向の向きは逆にしてもよい。 The laminated member 43 has a convex portion 43a formed in the central portion of the upper surface and a concave portion 43b formed in the central portion of the lower surface, except for the laminated member 43 located at the uppermost position. The laminated member 43 located at the uppermost position is formed with holes 43c penetrating the upper surface and the lower surface. When a plurality of laminated members 43 are laminated in the vertical direction, the convex portions 43a are inserted into the recesses 43b and the holes 43c of the laminated members 43 adjacent to each other and connected in a fitted state. The vertical orientation of the laminated member 43 may be reversed.

ここで、複数の積層部材４３のうち、巻線２０に最も近い（最も下方）位置の積層部材４３を巻線側積層部材４３Ａとし、上部フレーム３１に最も近い（最も上方）位置の積層部材４３をフレーム側積層部材４３Ｂとする。 Here, among the plurality of laminated members 43, the laminated member 43 at the position closest to the winding 20 (lowermost) is designated as the winding side laminated member 43A, and the laminated member 43 at the position closest to the upper frame 31 (uppermost). Is the frame side laminated member 43B.

固定部材４４は、水平方向に沿って位置するベース壁４４１と、ベース壁４４１の上面に連なって上方に延びる概略円筒状の周壁４４２と、ベース壁４４１の下面における一端側（図２中右端側）から下方に突出するストッパ壁４４３とを備えている。ベース壁４４１は外側巻線２２の上面上に配置される。周壁４４２の内部には複数積層された積層部材４３が配置され、ベース壁４４１の上面上に巻線側積層部材４３Ａが接触して載置された状態となる。ストッパ壁４４３は、外側巻線２２の外側の周面となる側面より外方に配置される。 The fixing member 44 includes a base wall 441 located along the horizontal direction, a substantially cylindrical peripheral wall 442 extending upward in line with the upper surface of the base wall 441, and one end side (right end side in FIG. 2) on the lower surface of the base wall 441. ) With a stopper wall 443 protruding downward. The base wall 441 is arranged on the upper surface of the outer winding 22. A plurality of laminated members 43 are arranged inside the peripheral wall 442, and the winding side laminated members 43A are placed in contact with each other on the upper surface of the base wall 441. The stopper wall 443 is arranged outward from the side surface that is the outer peripheral surface of the outer winding 22.

ここで、固定部材４４は、第１支持面４４ａ、第２支持面４４ｂ、第３支持面４４ｃ及び第４支持面４４ｄを備えている。第１支持面４４ａは、ベース壁４４１の下面によって形成される。第１支持面４４ａは、外側巻線２２の上面に沿って位置しており、外側巻線２２の上面に下方への力を加えて外側巻線２２を上面側から支持する。本実施の形態では、第１支持面４４ａと外側巻線２２の上面との間にシート部材ＳＴを設けたが、かかるシート部材ＳＴを省略し、第１支持面４４ａと外側巻線２２の上面とが直接接触するようにしてもよい。 Here, the fixing member 44 includes a first support surface 44a, a second support surface 44b, a third support surface 44c, and a fourth support surface 44d. The first support surface 44a is formed by the lower surface of the base wall 441. The first support surface 44a is located along the upper surface of the outer winding 22, and applies a downward force to the upper surface of the outer winding 22 to support the outer winding 22 from the upper surface side. In the present embodiment, the seat member ST is provided between the first support surface 44a and the upper surface of the outer winding 22, but the seat member ST is omitted and the first support surface 44a and the upper surface of the outer winding 22 are omitted. May be in direct contact with.

第２支持面４４ｂは、周壁４４２の内部におけるベース壁４４１の上面によって形成され、第１支持面４４ａの裏面側に設けられる。第２支持面４４ｂは、巻線側積層部材４３Ａの下面に沿って位置しており、巻線側積層部材４３Ａの下面に上方への力を加えて各積層部材４３を下面側から支持する。 The second support surface 44b is formed by the upper surface of the base wall 441 inside the peripheral wall 442, and is provided on the back surface side of the first support surface 44a. The second support surface 44b is located along the lower surface of the winding side laminated member 43A, and applies an upward force to the lower surface of the winding side laminated member 43A to support each laminated member 43 from the lower surface side.

第３支持面４４ｃは、ストッパ壁４４３の内面（図２中左面）によって形成される。第３支持面４４ｃは、外側巻線２２の径方向で鉄心１０における脚部１１に最も遠い部分における外側巻線２２の側面（外側の周面）に沿って配置される。第３支持面４４ｃは、外側巻線２２の側面から中心位置方向（脚部１１に向かう方向）に押さえる力を付与可能となり、外側巻線２２を側面側から支持する。本実施の形態では、第３支持面４４ｃとの外側巻線２２の側面との間にスペーサＳＰを設けたが、かかるスペーサＳＰを省略し、第３支持面４４ｃと外側巻線２２の側面とが直接接触するようにしてもよい。 The third support surface 44c is formed by the inner surface (left surface in FIG. 2) of the stopper wall 443. The third support surface 44c is arranged along the side surface (outer peripheral surface) of the outer winding 22 at the portion farthest from the leg 11 in the iron core 10 in the radial direction of the outer winding 22. The third support surface 44c can apply a pressing force from the side surface of the outer winding 22 toward the center position (direction toward the leg 11), and supports the outer winding 22 from the side surface side. In the present embodiment, the spacer SP is provided between the third support surface 44c and the side surface of the outer winding 22, but the spacer SP is omitted and the third support surface 44c and the side surface of the outer winding 22 are provided. May be in direct contact with.

第４支持面４４ｄは、周壁４４２の内周面によって形成される。第４支持面４４ｄは、周壁４４２内にて、巻線側積層部材４３Ａを含む複数積層された積層部材４３の側面に沿って位置している。第４支持面４４ｄの上下長さは、巻線側積層部材４３Ａの積層方向（上下方向）厚さより長く形成され、具体的には、巻線側積層部材４３Ａの厚さの約１．５倍程度に形成される。第４支持面４４ｄは、巻線側積層部材４３Ａ及びその上方の積層部材４３の側面から該積層部材４３の中心位置方向に押さえる力を付与可能となり、積層された積層部材４３を側面側から支持する。 The fourth support surface 44d is formed by the inner peripheral surface of the peripheral wall 442. The fourth support surface 44d is located in the peripheral wall 442 along the side surface of the plurality of laminated members 43 including the winding side laminated member 43A. The vertical length of the fourth support surface 44d is formed longer than the thickness of the winding side laminated member 43A in the stacking direction (vertical direction), and specifically, about 1.5 times the thickness of the winding side laminated member 43A. Formed to a degree. The fourth support surface 44d can apply a force to hold the laminated member 43 on the winding side and the side surface of the laminated member 43 above the winding member 43 in the central position direction of the laminated member 43, and supports the laminated member 43 from the side surface side. To do.

上部保持部材４１にあっては、上記の積層部材４３及び固定部材４４に加え、結合部材４５、アダプタ４６及び弾性部材４７を更に備えている。アダプタ４６は、所定の上下厚みに形成されて上部フレーム３１の水平部３１ａに固定され、該水平部３１ａと結合部材４５とを連結するよう設けられる。弾性部材４７は、ゴム板等によって弾性変形可能に設けられ、本実施の形態では３枚設けられて厚さ方向（上下方向）に重ねられている。 The upper holding member 41 further includes a coupling member 45, an adapter 46, and an elastic member 47 in addition to the above-mentioned laminated member 43 and fixing member 44. The adapter 46 is formed to have a predetermined vertical thickness, is fixed to the horizontal portion 31a of the upper frame 31, and is provided so as to connect the horizontal portion 31a and the coupling member 45. The elastic members 47 are provided so as to be elastically deformable by a rubber plate or the like, and in the present embodiment, three elastic members 47 are provided and stacked in the thickness direction (vertical direction).

結合部材４５は、アダプタ４６の下面に固定される円筒状の外側形成部４５１と、外側形成部４５１の内側に設けられた内側形成部４５２とを備えている。外側形成部４５１の内周面は雌ねじ形状（図示省略）に設けられる一方、内側形成部４５２の外周面は雄ねじ形状（図示省略）に設けられ、それらが螺合して結合されている。結合部材４５では、内側形成部４５２を軸線周りに回転操作することで、内側形成部４５２自体を上下方向に変位し、外側巻線２２に対して離反接近可能に設けられる（図４参照）。 The coupling member 45 includes a cylindrical outer forming portion 451 fixed to the lower surface of the adapter 46, and an inner forming portion 452 provided inside the outer forming portion 451. The inner peripheral surface of the outer forming portion 451 is provided in a female screw shape (not shown), while the outer peripheral surface of the inner forming portion 452 is provided in a male screw shape (not shown), and they are screwed together. In the coupling member 45, by rotating the inner forming portion 452 around the axis, the inner forming portion 452 itself is displaced in the vertical direction and is provided so as to be separated and approachable from the outer winding 22 (see FIG. 4).

内側形成部４５２は、上記の雄ねじ形状が外周面に形成された円筒部４５２ａと、円筒部４５２ａの上端に連なって形成された上壁部４５２ｂとを備えている。図２の状態にて、内側形成部４５２内に弾性部材４７が３枚重なって収められる。円筒部４５２ａは、積層部材４３を上方から覆って受容可能な大きさに設けられる。 The inner forming portion 452 includes a cylindrical portion 452a having the above-mentioned male screw shape formed on the outer peripheral surface, and an upper wall portion 452b formed so as to be connected to the upper end of the cylindrical portion 452a. In the state of FIG. 2, three elastic members 47 are stacked and housed in the inner forming portion 452. The cylindrical portion 452a covers the laminated member 43 from above and is provided in an acceptable size.

図４は、巻線を保持した状態の上部保持部材を一部縦断面視した説明図である。図２に示す状態から内側形成部４５２を回転操作して下降させると、図４に示すように、弾性部材４７がフレーム側積層部材４３Ｂに押し当てられる。内側形成部４５２の下降量に応じて各弾性部材４７が圧縮され、フレーム側積層部材４３Ｂの上面に下方への力が加えられる。かかる下方への力は、内側形成部４５２における上壁部４５２ｂの下面から弾性部材４７を介して加えることとなる。よって、結合部材４５において、上壁部４５２ｂの下面はフレーム側積層部材４３Ｂを上面側から支持する第５支持面４５ａとされる。第５支持面４５ａは、第２支持面４４ｂと対向するように設けられる。 FIG. 4 is an explanatory view of a part of the upper holding member in a state where the winding is held in a vertical cross section. When the inner forming portion 452 is rotated and lowered from the state shown in FIG. 2, the elastic member 47 is pressed against the frame-side laminated member 43B as shown in FIG. Each elastic member 47 is compressed according to the amount of descent of the inner forming portion 452, and a downward force is applied to the upper surface of the frame-side laminated member 43B. Such a downward force is applied from the lower surface of the upper wall portion 452b of the inner forming portion 452 via the elastic member 47. Therefore, in the coupling member 45, the lower surface of the upper wall portion 452b is a fifth support surface 45a that supports the frame-side laminated member 43B from the upper surface side. The fifth support surface 45a is provided so as to face the second support surface 44b.

内側形成部４５２の下降による下方への力は、弾性部材４７、積層部材４３、固定部材４４を通じ、該固定部材４４の第１支持面４４ａによって外側巻線２２の上面に加えられる。言い換えると、固定部材４４の第１支持面４４ａが外側巻線２２を上面側から支持するようになる。また、この状態においては、外側巻線２２から上向きの反力が発生し、該反力が固定部材４４の第２支持面４４ｂを介して巻線側積層部材４３Ａに加えられる。言い換えると、第２支持面４４ｂが巻線側積層部材４３Ａを下面側から支持するようになる。 The downward force due to the lowering of the inner forming portion 452 is applied to the upper surface of the outer winding 22 by the first support surface 44a of the fixing member 44 through the elastic member 47, the laminated member 43, and the fixing member 44. In other words, the first support surface 44a of the fixing member 44 supports the outer winding 22 from the upper surface side. Further, in this state, an upward reaction force is generated from the outer winding 22 and the reaction force is applied to the winding side laminated member 43A via the second support surface 44b of the fixing member 44. In other words, the second support surface 44b supports the winding side laminated member 43A from the lower surface side.

図４の状態では、上部保持部材４１によって外側巻線２２を下方に押さえ付けている。外側巻線２２の下部は下部保持部材４２に載置されて支持されるので（図１参照）、外側巻線２２が各保持部材４１、４２によって上下両側から締め付けられて保持される。この状態において、結合部材４５は、複数の積層部材４３におけるフレーム側積層部材４３Ｂと上部フレーム３１とで挟まれて配置される。また、弾性部材４７は、結合部材４５の第５支持面４５ａとフレーム側積層部材４３Ｂとの間に配置される。 In the state of FIG. 4, the outer winding 22 is pressed downward by the upper holding member 41. Since the lower portion of the outer winding 22 is placed and supported on the lower holding member 42 (see FIG. 1), the outer winding 22 is fastened and held from both the upper and lower sides by the holding members 41 and 42. In this state, the coupling member 45 is arranged so as to be sandwiched between the frame-side laminated member 43B and the upper frame 31 of the plurality of laminated members 43. Further, the elastic member 47 is arranged between the fifth support surface 45a of the coupling member 45 and the frame-side laminated member 43B.

更に、図４の状態にて、下降した内側形成部４５２における円筒部４５２ａの下端側は、固定部材４４の上面から上方に離れつつフレーム側積層部材４３Ｂを受容している。このとき、円筒部４５２ａの内周面はフレーム側積層部材４３Ｂの側面（外周面）に沿って配置される。かかる配置において、結合部材４５における円筒部４５２ａの内周面はフレーム側積層部材４３Ｂを側面側から支持する第６支持面４５ｂとされる。第６支持面４５ｂの上下長さは、フレーム側積層部材４３Ｂの積層方向（上下方向）厚さより長く形成される。第６支持面４５ｂは、フレーム側積層部材４３Ｂの側面から中心に向かう方向の押さえ力を付与可能となり、フレーム側積層部材４３Ｂを含む各積層部材４３を側面側から支持する。 Further, in the state of FIG. 4, the lower end side of the cylindrical portion 452a of the lowered inner forming portion 452 receives the frame-side laminated member 43B while being separated upward from the upper surface of the fixing member 44. At this time, the inner peripheral surface of the cylindrical portion 452a is arranged along the side surface (outer peripheral surface) of the frame-side laminated member 43B. In such an arrangement, the inner peripheral surface of the cylindrical portion 452a of the coupling member 45 is a sixth support surface 45b that supports the frame-side laminated member 43B from the side surface side. The vertical length of the sixth support surface 45b is formed to be longer than the thickness of the frame-side laminated member 43B in the stacking direction (vertical direction). The sixth support surface 45b can apply a pressing force in the direction from the side surface of the frame side laminated member 43B toward the center, and supports each laminated member 43 including the frame side laminated member 43B from the side surface side.

本実施の形態では、図４に示す外側巻線２２の保持状態で、地震等によって水平方向の力が上部保持部材４１に作用し、それぞれの積層部材４３にて水平方向にずれたり傾いたりする力が発生しても、該ずれや傾きを以下に述べるように抑制することができる。 In the present embodiment, in the holding state of the outer winding 22 shown in FIG. 4, a horizontal force acts on the upper holding member 41 due to an earthquake or the like, and each laminated member 43 is displaced or tilted in the horizontal direction. Even if a force is generated, the deviation and inclination can be suppressed as described below.

固定部材４４においては、巻線側積層部材４３Ａを含む複数の積層部材４３の側面近傍に第４支持面４４ｄが位置している。これにより、それぞれの積層部材４３が水平方向にずれたり傾いたりしようとしても、積層部材４３の側面が第４支持面４４ｄに接触して水平方向に支持されるようになる。これにより、第４支持面４４ｄによって各積層部材４３のずれ及び傾きが規制されるようになる。 In the fixing member 44, the fourth support surface 44d is located near the side surface of the plurality of laminated members 43 including the winding side laminated member 43A. As a result, even if each of the laminated members 43 tries to shift or tilt in the horizontal direction, the side surface of the laminated member 43 comes into contact with the fourth support surface 44d and is supported in the horizontal direction. As a result, the displacement and inclination of each laminated member 43 are regulated by the fourth support surface 44d.

特に、第４支持面４４ｄが巻線側積層部材４３Ａとその上に積層する積層部材４３との各側面に沿って位置するので、該積層部材４３Ａ、４３でのずれや傾きをより良く抑制することができる。 In particular, since the fourth support surface 44d is located along each side surface of the winding side laminated member 43A and the laminated member 43 laminated on the winding side laminated member 43A, deviation and inclination of the laminated members 43A and 43 are better suppressed. be able to.

結合部材４５においては、フレーム側積層部材４３Ｂの側面近傍に第６支持面４５ｂが位置している。これにより、フレーム側積層部材４３Ｂが水平方向にずれたり傾いたりしようとしても、フレーム側積層部材４３Ｂの側面が第６支持面４５ｂに接触して水平方向に支持されるようになる。これにより、第６支持面４５ｂによって各積層部材４３のずれ及び傾きが規制されるようになる。 In the coupling member 45, the sixth support surface 45b is located near the side surface of the frame-side laminated member 43B. As a result, even if the frame-side laminated member 43B tries to shift or tilt in the horizontal direction, the side surface of the frame-side laminated member 43B comes into contact with the sixth support surface 45b and is supported in the horizontal direction. As a result, the sixth support surface 45b regulates the deviation and inclination of each laminated member 43.

ここで、固定部材４４は第３支持面４４ｃを有しており、第３支持面４４ｃは外側巻線２２の側面近傍に位置している。これにより、固定部材４４に対し外側巻線２２が水平方向にずれたり傾いたりしようとしても、外側巻線２２と第３支持面４４ｃとがスペーサＳＰを介して押し合うようになり、外側巻線２２が側面側から第３支持面４４ｃによって支持されるようになる。これにより、第３支持面４４ｃによって、固定部材４４を含む上部保持部材４１と外側巻線２２との間でのずれ及び傾きが規制されるようになる。 Here, the fixing member 44 has a third support surface 44c, and the third support surface 44c is located near the side surface of the outer winding 22. As a result, even if the outer winding 22 tries to be displaced or tilted in the horizontal direction with respect to the fixing member 44, the outer winding 22 and the third support surface 44c are pressed against each other via the spacer SP, and the outer winding 22 is pressed against the outer winding. 22 comes to be supported by the third support surface 44c from the side surface side. As a result, the third support surface 44c regulates the deviation and inclination between the upper holding member 41 including the fixing member 44 and the outer winding 22.

このような実施の形態によれば、外側巻線２２に水平方向の力が加わっても、複数積層された積層部材４３でのずれや傾きを抑制することができる。これにより、複数の積層部材４３が上下に揃って積層した状態に良好に維持でき、外側巻線２２が各フレーム３１、３２間で支持不能となって脱落したり、外側巻線２２の支持が不安定になったりすることを抑制することができる。 According to such an embodiment, even if a force in the horizontal direction is applied to the outer winding 22, it is possible to suppress deviation and inclination of the plurality of laminated members 43. As a result, it is possible to maintain a state in which a plurality of laminated members 43 are vertically aligned and laminated, and the outer winding 22 becomes unsupportable between the frames 31 and 32 and falls off, or the outer winding 22 is supported. It is possible to suppress instability.

ここで、上記実施の形態の固定部材４４を省略して積層部材４３の枚数を増加した比較構造を検討する。該比較構造と上記実施の形態の構成とを比べると、複数の積層部材４３の一部を固定部材４４に変更するだけで、上述のように複数積層された積層部材４３でのずれや傾きを抑制することができる。従って、変圧器１の耐震対策を実施するにあたり、比較構造の一部の構成を固定部材４４に交換すればよいので、耐震対策のためのコスト上昇を抑制でき、また、短時間での耐震対策を実現することが可能となる。 Here, a comparative structure in which the number of laminated members 43 is increased by omitting the fixing member 44 of the above embodiment will be examined. Comparing the comparative structure with the configuration of the above-described embodiment, only by changing a part of the plurality of laminated members 43 to the fixing member 44, the deviation and inclination of the plurality of laminated members 43 as described above can be obtained. It can be suppressed. Therefore, when implementing seismic measures for transformer 1, it is sufficient to replace a part of the configuration of the comparative structure with the fixing member 44, so that the cost increase for seismic measures can be suppressed, and the seismic measures in a short time can be suppressed. Can be realized.

本実施の形態における下部保持部材４２にあっては、図１に示すように、上部保持部材４１を上下逆向きとしつつ簡略化した構成が採用される。更に述べると、下部保持部材４２は、上部保持部材４１の固定部材４４以外の構成を省略しつつ、該固定部材４４の周壁４４２を上下方向に延長して下部フレーム３２の水平部３２ａ上に設置している。 As shown in FIG. 1, the lower holding member 42 in the present embodiment adopts a simplified configuration in which the upper holding member 41 is turned upside down. Further, the lower holding member 42 is installed on the horizontal portion 32a of the lower frame 32 by extending the peripheral wall 442 of the fixing member 44 in the vertical direction while omitting the configuration other than the fixing member 44 of the upper holding member 41. are doing.

本発明の実施の形態は上記の実施の形態に限定されるものではなく、本発明の技術的思想の趣旨を逸脱しない範囲において様々に変更、置換、変形されてもよい。さらには、技術の進歩又は派生する別技術によって、本発明の技術的思想を別の仕方で実現することができれば、その方法を用いて実施されてもよい。したがって、特許請求の範囲は、本発明の技術的思想の範囲内に含まれ得る全ての実施態様をカバーしている。 The embodiment of the present invention is not limited to the above embodiment, and may be variously modified, replaced, or modified without departing from the spirit of the technical idea of the present invention. Furthermore, if the technical idea of the present invention can be realized in another way by the advancement of technology or another technology derived from it, it may be carried out by using that method. Therefore, the scope of claims covers all embodiments that may be included within the scope of the technical idea of the present invention.

保持部材４０においては、下部保持部材４２も、上記の上部保持部材４１と同様に構成しつつ上下逆向きとした構成を採用してもよい。この場合、上部保持部材４１における各構成が上下逆向きとなり、各構成を支持する方向も上下逆向きとなる。また、保持部材４０は、下部保持部材４２を上記の上部保持部材４１と同様に構成しつつ上下逆向きとした構成し、上部保持部材４１を図１に示す下部保持部材４２と同様に構成しつつ上下逆向きとした構成を採用してもよい。なお、上部保持部材４１および下部保持部材４２の構造をともに採用する場合、下部保持部材４２側の弾性部材４７を省略してもよい。このような構成とすることで、外側巻線２２自体の重みによる弾性部材４７の劣化を防止することができる。 In the holding member 40, the lower holding member 42 may also be configured in the same manner as the upper holding member 41 but upside down. In this case, each configuration of the upper holding member 41 is upside down, and the direction of supporting each configuration is also upside down. Further, the holding member 40 is configured such that the lower holding member 42 is configured in the same manner as the upper holding member 41 and is turned upside down, and the upper holding member 41 is configured in the same manner as the lower holding member 42 shown in FIG. However, an upside-down configuration may be adopted. When both the structures of the upper holding member 41 and the lower holding member 42 are adopted, the elastic member 47 on the lower holding member 42 side may be omitted. With such a configuration, deterioration of the elastic member 47 due to the weight of the outer winding 22 itself can be prevented.

また、上述した保持部材４０を用いて内側巻線２１を支持するようにしてもよい。但し、内側巻線２１は鉄心１０の脚部１１近傍に配置されるので、外側巻線２２に比べて水平方向の力による変位は生じ難くなる。 Further, the inner winding 21 may be supported by using the holding member 40 described above. However, since the inner winding 21 is arranged in the vicinity of the leg portion 11 of the iron core 10, displacement due to a force in the horizontal direction is less likely to occur as compared with the outer winding 22.

また、積層部材４３や弾性部材４７の枚数、厚さは、フレーム３０と巻線２０との離間距離等の各種条件に応じて適宜変更される。 Further, the number and thickness of the laminated member 43 and the elastic member 47 are appropriately changed according to various conditions such as the separation distance between the frame 30 and the winding 20.

また、上記実施の形態では、第４支持面４４ｄを円筒状の周壁４４２によって形成して積層部材４３の周方向に一連に連なる形状としたが、これに限られるものでなく、一部に隙間等を設けて複数に分割して形成してもよい。このとき、第４支持面４４ｄは、巻線２０の径方向で、鉄心１０における脚部１１に最も近い部分及び最も遠い部分にて、巻線側積層部材４３Ａの側面に沿う位置に形成されるとよい。これにより、巻線２０の揺れ等に対して第４支持面４４ｄから巻線側積層部材４３Ａの側面側を支持する力を効率良く加えることができる。 Further, in the above embodiment, the fourth support surface 44d is formed by a cylindrical peripheral wall 442 to form a series of continuous members in the circumferential direction of the laminated member 43, but the present invention is not limited to this, and a gap is partially formed. Etc. may be provided and formed by dividing into a plurality of parts. At this time, the fourth support surface 44d is formed at a position along the side surface of the winding side laminated member 43A at the portion closest to the leg portion 11 and the portion farthest from the leg portion 11 in the iron core 10 in the radial direction of the winding 20. It is good. As a result, a force that supports the side surface side of the winding side laminated member 43A from the fourth supporting surface 44d can be efficiently applied to the shaking of the winding 20 and the like.

また、上記実施の形態では、本発明を変圧器に適用した構成について説明したが、上述した作用効果が得られるのであれば、他の電力用静止器や電力変換装置に適用することも可能である。 Further, in the above embodiment, the configuration in which the present invention is applied to a transformer has been described, but it is also possible to apply the present invention to other power stationary devices and power conversion devices as long as the above-mentioned action and effect can be obtained. is there.

また、上記実施の形態にて図示した内容は、説明用に模式的に表したものであり、上述した作用効果を発揮できれば、巻線２０やフレーム３０の形状等について変更してもよい。 Further, the contents illustrated in the above-described embodiment are schematically shown for explanation, and the shapes of the winding 20 and the frame 30 may be changed as long as the above-described effects can be exhibited.

１変圧器
１０鉄心
２０巻線
２１内側巻線
２２外側巻線
３０フレーム
３１上部フレーム
３２下部フレーム
４０保持部材
４３積層部材
４３Ａ巻線側積層部材
４３Ｂフレーム側積層部材
４４固定部材
４４ａ第１支持面
４４ｂ第２支持面
４４ｃ第３支持面
４４ｄ第４支持面
４５結合部材
４５ａ第５支持面
４５ｂ第６支持面 1 Transformer 10 Iron core 20 Winding 21 Inner winding 22 Outer winding 30 Frame 31 Upper frame 32 Lower frame 40 Holding member 43 Laminated member 43A Winding side laminated member 43B Frame side laminated member 44 Fixing member 44a First support surface 44b 2nd support surface 44c 3rd support surface 44d 4th support surface 45 Coupling member 45a 5th support surface 45b 6th support surface

Claims

鉄心と、該鉄心に巻回されるように配置されて軸方向が上下方向に向けられた巻線と、該巻線の上下両側に配置されるフレームと、該フレームと前記巻線との間に設けられて該巻線を保持する保持部材とを備えた変圧器であって、
前記保持部材は、上下方向に積層される複数の積層部材と、該複数の積層部材と前記巻線とで挟まれて配置される固定部材とを備え、
前記複数の積層部材のうち、前記巻線に最も近い位置の積層部材を巻線側積層部材とし、
前記固定部材は、前記巻線を上面側又は下面側から支持する第１支持面と、
前記第１支持面の裏面側に設けられ、前記巻線側積層部材を支持する第２支持面と、
前記巻線を側面側から支持する第３支持面と、
前記巻線側積層部材を側面側から支持する第４支持面とを備えていることを特徴とする変圧器。 Between the iron core, the windings arranged so as to be wound around the iron core and the axial direction is directed in the vertical direction, the frames arranged on both the upper and lower sides of the winding, and the frame and the winding. A transformer provided with a holding member for holding the winding.
The holding member includes a plurality of laminated members that are laminated in the vertical direction, and a fixing member that is sandwiched between the plurality of laminated members and the winding.
Among the plurality of laminated members, the laminated member at the position closest to the winding is designated as the winding side laminated member.
The fixing member includes a first support surface that supports the winding from the upper surface side or the lower surface side, and
A second support surface provided on the back surface side of the first support surface and supporting the winding side laminated member, and
A third support surface that supports the winding from the side surface side,
A transformer including a fourth support surface that supports the winding side laminated member from the side surface side.

前記第４支持面の上下方向長さは、前記巻線側積層部材の積層方向厚さよりも長いことを特徴とする請求項１に記載の変圧器。 The transformer according to claim 1, wherein the length of the fourth support surface in the vertical direction is longer than the thickness of the winding-side laminated member in the stacking direction.

前記複数の積層部材のうち、前記フレームに最も近い位置の積層部材をフレーム側積層部材とし、
前記保持部材は、前記複数の積層部材と前記フレームとで挟まれて配置される結合部材を備え、
前記結合部材は、前記第２支持面に対向して設けられ、前記フレーム側積層部材を支持する第５支持面と、
前記フレーム側積層部材を側面側から支持する第６支持面とを備えていることを特徴とする請求項１または請求項２に記載の変圧器。 Among the plurality of laminated members, the laminated member at the position closest to the frame is designated as the frame-side laminated member.
The holding member includes a connecting member that is sandwiched between the plurality of laminated members and the frame.
The connecting member is provided so as to face the second support surface, and has a fifth support surface that supports the frame-side laminated member.
The transformer according to claim 1 or 2, further comprising a sixth support surface that supports the frame-side laminated member from the side surface side.

前記第６支持面の上下長さは、前記フレーム側積層部材の積層方向厚さよりも長いことを特徴とする請求項３に記載の変圧器。 The transformer according to claim 3, wherein the vertical length of the sixth support surface is longer than the thickness of the frame-side laminated member in the stacking direction.

前記第５支持面と前記フレーム側積層部材との間に弾性部材が設けられていることを特徴とする請求項３または請求項４に記載の変圧器。 The transformer according to claim 3 or 4, wherein an elastic member is provided between the fifth support surface and the frame-side laminated member.

前記第４支持面は、前記巻線の径方向で前記鉄心に最も近い部分及び最も遠い部分にて、前記巻線側積層部材の側面に沿って配置されることを特徴とする請求項１ないし請求項５のいずれかに記載の変圧器。 Claims 1 to 1, wherein the fourth support surface is arranged along the side surface of the winding-side laminated member at a portion closest to the iron core and a portion farthest from the iron core in the radial direction of the winding. The transformer according to any one of claim 5.

前記第３支持面は、前記巻線の径方向で前記鉄心に最も遠い部分における該巻線の側面に沿って配置されることを特徴とする請求項１ないし請求項６のいずれかに記載の変圧器。 The third support surface according to any one of claims 1 to 6, wherein the third support surface is arranged along the side surface of the winding at a portion farthest from the iron core in the radial direction of the winding. Transformer.

前記フレームは、上部フレームと下部フレームとを有し、
前記保持部材は、前記上部フレームと前記巻線の上面との間に設けられることを特徴とする請求項１ないし請求項７のいずれかに記載の変圧器。 The frame has an upper frame and a lower frame.
The transformer according to any one of claims 1 to 7, wherein the holding member is provided between the upper frame and the upper surface of the winding.

前記巻線は、内側巻線と、該内側巻線の外側に設けられた外側巻線とを有し、
前記保持部材は、前記外側巻線を保持することを特徴とする請求項１ないし請求項８のいずれかに記載の変圧器。 The winding has an inner winding and an outer winding provided on the outside of the inner winding.
The transformer according to any one of claims 1 to 8, wherein the holding member holds the outer winding.