JP7471256B2 - Seismic reinforcement device for static inductors - Google Patents

Seismic reinforcement device for static inductors Download PDF

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JP7471256B2
JP7471256B2 JP2021097325A JP2021097325A JP7471256B2 JP 7471256 B2 JP7471256 B2 JP 7471256B2 JP 2021097325 A JP2021097325 A JP 2021097325A JP 2021097325 A JP2021097325 A JP 2021097325A JP 7471256 B2 JP7471256 B2 JP 7471256B2
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stationary inductor
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秀勇 松原
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Mitsubishi Electric Corp
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Description

本開示は、静止誘導器の耐震強度を高める静止誘導器の耐震補強装置に関する。 This disclosure relates to a seismic reinforcement device for a stationary inductor that increases the seismic strength of the stationary inductor.

従来、変圧器、分路リアクトルなどの静止誘導器が知られている。静止誘導器は、鉄心などを有する静止誘導器本体と、静止誘導器本体を収容する箱状のケースと、を備える。ケースには据え付け足が設けられている。静止誘導器では、据え付け足をアンカーボルトで床面へ固定することによって、地震の揺れに耐えられるようにしている。しかし、大きな地震災害が起こるたびに、静止誘導器に必要とされる耐震強度が増していき、既に設置されている静止誘導器の耐震強度が、必要とされる耐震強度に足りない場合が出てきている。 Conventionally, static inductors such as transformers and shunt reactors are known. A static inductor comprises a static inductor body having an iron core and a box-shaped case that houses the static inductor body. The case is provided with mounting feet. The mounting feet of a static inductor are fixed to the floor with anchor bolts to enable the static inductor to withstand earthquake shaking. However, with each major earthquake disaster, the earthquake resistance required for static inductors increases, and there are cases where the earthquake resistance of static inductors that have already been installed does not meet the required earthquake resistance.

特許文献１には、静止誘導器の揺れを抑制するために固定金具をケース下部へ取り付け、固定ボルトにより床へ固定する技術が開示されている。また、特許文献２には、変圧器の上部を押さえる変圧器押さえ機構によって、変圧器を耐震補強する技術が開示されている。特許文献２に記載の変圧器押さえ機構は、変圧器の上部と変圧器の上部を支持する支持部材との間に弾性材を有するアブソーバ部と、変圧器の上部を挟んで対向して配置されるアブソーバ部同士を連結し固定する連結フレームと、を有する。 Patent Document 1 discloses a technique for attaching a fixing bracket to the bottom of the case and fixing it to the floor with a fixing bolt to suppress the shaking of the stationary inductor. Patent Document 2 discloses a technique for seismically reinforcing a transformer using a transformer holding mechanism that holds down the top of the transformer. The transformer holding mechanism described in Patent Document 2 has an absorber section having an elastic material between the top of the transformer and a support member that supports the top of the transformer, and a connecting frame that connects and fixes the absorber sections that are arranged opposite each other with the top of the transformer in between.

実公昭６０－０３８２６６号公報Japanese Utility Model Publication No. 60-038266 特開２０１３－２１１５１０号公報JP 2013-211510 A

しかしながら、特許文献１に記載の技術では、固定金具をケースへ取り付けるためのケースへの加工が必要となるため、設置済みの静止誘導器に対して追加で耐震補強をすることが困難であるという問題があった。また、特許文献２に記載の耐震補強装置では、静止誘導器を固定する支持部材としての支柱が４本用いられ、さらに、支柱の剛性強化のため、対向する支柱をブレースにより連結する等、複雑な形状となっていた。 However, the technology described in Patent Document 1 requires processing of the case in order to attach the fixing brackets to the case, which makes it difficult to perform additional seismic reinforcement on a stationary inductor that has already been installed. In addition, the seismic reinforcement device described in Patent Document 2 uses four pillars as support members for fixing the stationary inductor, and furthermore, to increase the rigidity of the pillars, opposing pillars are connected by braces, resulting in a complex shape.

本開示は、上記に鑑みてなされたものであって、簡易な構成で設置済みの静止誘導器にも後付けで耐震補強を行うことができる静止誘導器の耐震補強装置を得ることを目的とする。 The present disclosure has been made in consideration of the above, and aims to provide a seismic reinforcement device for a static inductor that has a simple configuration and can be retrofitted to perform seismic reinforcement on an already installed static inductor.

上述した課題を解決し、目的を達成するために、本開示は、基礎上に固定される静止誘導器と接触させることによって耐震補強を行う静止誘導器の耐震補強装置において、静止誘導器に隣接して配置され、基礎上に固定される支持部材と、静止誘導器のケースの上部に接触し、金属製または合金製である接触部、および接触部に一方の端部が固定され、他方の端部が支持部材と固定される棒状部を有する接触部材と、を備える。 In order to solve the above-mentioned problems and achieve the object, the present disclosure provides a static inductor seismic reinforcement device that performs seismic reinforcement by contacting a static inductor fixed on a foundation, the device comprising: a support member that is disposed adjacent to the static inductor and fixed on the foundation; a contact member that contacts the upper part of the case of the static inductor and is made of metal or alloy; and a contact member having a rod-shaped portion whose one end is fixed to the contact member and whose other end is fixed to the support member.

本開示によれば、簡易な構成で設置済みの静止誘導器にも後付けで耐震補強を行うことができるという効果を奏する。 The present disclosure has the advantage that it is possible to retrofit already installed static inductors with a simple configuration to provide seismic reinforcement.

油入変圧器の外観の一例を模式的に示す正面図FIG. 1 is a front view showing an example of the appearance of an oil-immersed transformer. 油入変圧器の外観の一例を模式的に示す側面図FIG. 1 is a side view showing an example of the appearance of an oil-immersed transformer. 実施の形態１に係る油入変圧器の耐震補強装置の外観の一例を模式的に示す側面図FIG. 1 is a side view showing an example of the external appearance of an earthquake-resistant reinforcement device for an oil-filled transformer according to a first embodiment; 実施の形態２に係る油入変圧器の耐震補強装置の外観の一例を模式的に示す側面図FIG. 13 is a side view showing an example of the external appearance of a seismic reinforcement device for an oil-filled transformer according to a second embodiment. 実施の形態３に係る油入変圧器の耐震補強装置の外観の一例を模式的に示す側面図FIG. 13 is a side view showing an example of the external appearance of a seismic reinforcement device for an oil-filled transformer according to a third embodiment.

以下に、本開示の実施の形態にかかる静止誘導器の耐震補強装置を図面に基づいて詳細に説明する。 Below, the seismic reinforcement device for a stationary inductor according to an embodiment of the present disclosure is described in detail with reference to the drawings.

実施の形態１．
以下では、静止誘導器の一例が油入変圧器である場合を例に挙げる。図１は、油入変圧器の外観の一例を模式的に示す正面図であり、図２は、油入変圧器の外観の一例を模式的に示す側面図である。なお、油入変圧器１の幅方向をＸ方向とし、奥行き方向をＹ方向とし、高さ方向をＺ方向とする。 Embodiment 1.
In the following, an example of a stationary induction device will be described in the case of an oil-filled transformer. Fig. 1 is a front view showing an example of the appearance of an oil-filled transformer, and Fig. 2 is a side view showing an example of the appearance of an oil-filled transformer. The width direction of the oil-filled transformer 1 is defined as the X direction, the depth direction is defined as the Y direction, and the height direction is defined as the Z direction.

油入変圧器１は、図示しない変圧器本体と、変圧器本体を収容する箱状のケース２と、を備える。変圧器本体は、ケース２の中に、鉄心、鉄心に巻き付けられた巻線、鉄心および巻線を固定する構造物等を収容する。ケース２の中には、変圧器本体を絶縁する絶縁油が封入されている。 The oil-immersed transformer 1 comprises a transformer body (not shown) and a box-shaped case 2 that houses the transformer body. The transformer body houses inside the case 2 an iron core, a winding wound around the iron core, a structure that secures the iron core and the winding, etc. The case 2 is filled with insulating oil that insulates the transformer body.

ケース２の下面には、Ｙ方向に延在する据え付け足３がＸ方向に間隔をおいて設けられる。据え付け足３は、ケース２の下面から突出して設けられ、断面がＬ字形状を有している。図１および図２の例では、据え付け足３は、２本設けられる場合が示されている。据え付け足３は、ＸＹ面と平行な面を有し、基礎である床面に固定される足部３１と、ＹＺ面に平行な面を有し、ケース２を支持する脚部３２と、を有する。一例では、脚部３２の端部が、溶接などの方法によってケース２と固定されている。 On the underside of the case 2, mounting feet 3 extending in the Y direction are provided at intervals in the X direction. The mounting feet 3 are provided to protrude from the underside of the case 2 and have an L-shaped cross section. In the example of Figures 1 and 2, two mounting feet 3 are provided. The mounting feet 3 have a foot 31 that has a surface parallel to the XY plane and is fixed to the floor surface that serves as the foundation, and a leg 32 that has a surface parallel to the YZ plane and supports the case 2. In one example, the end of the leg 32 is fixed to the case 2 by a method such as welding.

足部３１には、図示しないボルト固定用の孔が設けられている。図２の例では、足部３１のＹ方向の両側の端部に２つのボルト固定用の孔が設けられている。このボルト固定用の孔に、床面に設けられるアンカーボルト５１を貫通させて、Ｚ方向の上側からナット４で固定する。これによって油入変圧器１は、床面に固定される。通常は、アンカーボルト５１によって地震に耐える構造となっているが、さらに耐震強度を上げるために耐震補強を施す場合がある。 The foot 31 is provided with holes for bolt fixing (not shown). In the example of FIG. 2, two bolt fixing holes are provided at both ends of the foot 31 in the Y direction. Anchor bolts 51 provided on the floor surface are passed through these bolt fixing holes and fixed with nuts 4 from above in the Z direction. In this way, the oil-filled transformer 1 is fixed to the floor surface. Normally, the structure is made to withstand earthquakes by the anchor bolts 51, but in some cases seismic reinforcement is applied to further increase seismic strength.

新規に製造するものについては、溶接、ボルトなどによって、ケース２へ固定することで耐震補強を施せばよい。しかし、既に使用場所へ設置済みのものに対しては、溶接、ボルトなどによって、ケース２へ固定することは、ケース２への追加加工が必要となってくるため、困難を伴う。そこで、以下の実施の形態の説明では、ケース２への追加加工を必要とせずに、耐震補強を施すことができる耐震補強装置について説明する。 For newly manufactured items, seismic reinforcement can be achieved by fixing the item to the case 2 with welding, bolts, etc. However, for items that have already been installed at the location of use, fixing the item to the case 2 with welding, bolts, etc. is difficult because it requires additional processing of the case 2. Therefore, in the following description of the embodiment, a seismic reinforcement device that can provide seismic reinforcement without requiring additional processing of the case 2 will be described.

図３は、実施の形態１に係る油入変圧器の耐震補強装置の外観の一例を模式的に示す側面図である。図３では、油入変圧器１も示している。なお、図１および図２で説明したものと同一の構成要素には、同一の符号を付して、その説明を省略する。耐震補強装置１０は、基礎である床面上に固定される油入変圧器１と接触させることによって耐震補強を行う装置である。 Figure 3 is a side view showing a schematic example of the appearance of an earthquake-resistant reinforcement device for an oil-filled transformer according to embodiment 1. Figure 3 also shows an oil-filled transformer 1. Note that the same components as those described in Figures 1 and 2 are given the same reference numerals and their description will be omitted. The earthquake-resistant reinforcement device 10 is a device that performs earthquake reinforcement by coming into contact with the oil-filled transformer 1 that is fixed onto the floor surface, which is the foundation.

図３に示されるように、耐震補強装置１０は、油入変圧器１の予め定められた方向であるＹ方向の両側に配置される。耐震補強装置１０は、油入変圧器１に隣接して配置され、床面上に固定される支持部材１１と、油入変圧器１のケース２を支持部材１１に固定する隙間調整用部材１２と、を備える。隙間調整用部材１２は、接触部材に対応する。 As shown in FIG. 3, the seismic reinforcement device 10 is arranged on both sides of the oil-filled transformer 1 in the Y direction, which is a predetermined direction. The seismic reinforcement device 10 is arranged adjacent to the oil-filled transformer 1 and includes a support member 11 fixed onto the floor surface, and a gap adjustment member 12 that fixes the case 2 of the oil-filled transformer 1 to the support member 11. The gap adjustment member 12 corresponds to a contact member.

一例では、支持部材１１は、Ｌ型の鋼材を直角三角形の形状に溶接することによって構成される。支持部材１１は、額縁状の直角三角形の板材からなる第１板状部１１１と、第１板状部１１１の外側の各辺を同じ方向に略直角に折り曲げた第２板状部１１２、第３板状部１１３および第４板状部１１４と、を有する。ここでは、直角三角形状の第１板状部１１１の斜辺に第２板状部１１２が設けられ、２つの隣辺のうち床面に配置される隣辺に第３板状部１１３が設けられ、もう一方の隣辺に第４板状部１１４が設けられる。すなわち、第２板状部１１２は、第１板状部１１１の斜辺に沿って第１板状部１１１に対して直角となるように設けられる。第３板状部１１３は、第１板状部１１１の床面に対向する隣辺に沿って第１板状部１１１に対して直角となるように設けられる。第４板状部１１４は、第１板状部１１１の油入変圧器１に対向する隣辺に沿って第１板状部１１１に対して直角となるように設けられる。 In one example, the support member 11 is constructed by welding L-shaped steel material into a right-angled triangle shape. The support member 11 has a first plate-shaped portion 111 made of a frame-shaped right-angled triangular plate material, and a second plate-shaped portion 112, a third plate-shaped portion 113, and a fourth plate-shaped portion 114, each of which is formed by bending the outer sides of the first plate-shaped portion 111 at approximately right angles in the same direction. Here, the second plate-shaped portion 112 is provided on the hypotenuse of the right-angled triangular first plate-shaped portion 111, the third plate-shaped portion 113 is provided on the adjacent side that is located on the floor surface out of the two adjacent sides, and the fourth plate-shaped portion 114 is provided on the other adjacent side. That is, the second plate-shaped portion 112 is provided so as to be perpendicular to the first plate-shaped portion 111 along the hypotenuse of the first plate-shaped portion 111. The third plate-shaped portion 113 is provided at a right angle to the first plate-shaped portion 111 along the adjacent side of the first plate-shaped portion 111 that faces the floor surface. The fourth plate-shaped portion 114 is provided at a right angle to the first plate-shaped portion 111 along the adjacent side of the first plate-shaped portion 111 that faces the oil-immersed transformer 1.

支持部材１１は、第２板状部１１２が油入変圧器１とは反対側に位置し、第３板状部１１３が床面に位置するように配置される。図３の例では、第３板状部１１３の方が、第４板状部１１４よりも短くされる。また、第４板状部１１４の長さ、すなわち支持部材１１の高さは、油入変圧器１のケース２の高さよりも高くされる。 The support member 11 is positioned so that the second plate-shaped portion 112 is located on the opposite side to the oil-filled transformer 1, and the third plate-shaped portion 113 is located on the floor surface. In the example of FIG. 3, the third plate-shaped portion 113 is shorter than the fourth plate-shaped portion 114. In addition, the length of the fourth plate-shaped portion 114, i.e., the height of the support member 11, is made higher than the height of the case 2 of the oil-filled transformer 1.

第３板状部１１３には、厚さ方向に貫通する図示しないボルト固定用の孔が設けられている。図３の例では、２つのボルト固定用の孔が設けられている。第４板状部１１４の上部には、厚さ方向に貫通する図示しないボルト貫通用の孔が設けられている。図３の例では、第４板状部１１４の上側の端部に１つのボルト貫通用の孔が設けられている。なお、ボルト貫通用の孔の位置は、油入変圧器１のケース２の上端よりも下側の位置となるようにされる。 The third plate-shaped portion 113 is provided with a hole for bolt fixing (not shown) that penetrates in the thickness direction. In the example of FIG. 3, two holes for bolt fixing are provided. The upper portion of the fourth plate-shaped portion 114 is provided with a hole for bolt passing (not shown) that penetrates in the thickness direction. In the example of FIG. 3, one hole for bolt passing is provided at the upper end of the fourth plate-shaped portion 114. The position of the hole for bolt passing is set to be lower than the upper end of the case 2 of the oil-filled transformer 1.

第１板状部１１１の外側の辺を折り曲げて、第２板状部１１２、第３板状部１１３および第４板状部１１４を形成することで、第１板状部１１１の厚さ方向の曲げに対する強度を向上させることができる。 By bending the outer edge of the first plate-shaped portion 111 to form the second plate-shaped portion 112, the third plate-shaped portion 113, and the fourth plate-shaped portion 114, the strength of the first plate-shaped portion 111 against bending in the thickness direction can be improved.

支持部材１１は、床面に設けられるアンカーボルト５２とナット１１５とによって固定される。床面に設けられるアンカーボルト５２が第３板状部１１３のボルト固定用の孔に挿通され、上側からナット１１５を締めることで固定される。支持部材１１の床面への固定は、油入変圧器１とは独立して行われる。アンカーボルト５２とナット１１５とは、固定部に対応する。固定部は、支持部材１１を床面に固定する。 The support member 11 is fixed by an anchor bolt 52 and a nut 115 provided on the floor surface. The anchor bolt 52 provided on the floor surface is inserted into a bolt fixing hole in the third plate-shaped portion 113, and is fixed by tightening the nut 115 from above. The support member 11 is fixed to the floor surface independently of the oil-filled transformer 1. The anchor bolt 52 and the nut 115 correspond to the fixing part. The fixing part fixes the support member 11 to the floor surface.

隙間調整用部材１２は、ネジ切りされた棒状部１２１と、棒状部１２１の油入変圧器１側の一方の端部に固定される平板状の圧接部１２２と、棒状部１２１の他方の端部を支持部材１１に固定する固定部材であるナット１２３と、を有する。圧接部１２２は、接触部に対応し、ケース２の上部に弾性体を介さずに接触する。圧接部１２２は、弾性体ではない金属製または合金製であり、一例では鋼材で構成される。棒状部１２１を支持部材１１の第４板状部１１４のボルト貫通用の孔に挿通した状態で、圧接部１２２をケース２の上部を押すように当てて、棒状部１２１の他方の端部をナット１２３で固定する。一例では、ナット１２３は、第４板状部１１４をＹ方向の両側から挟むように設けられる。隙間調整用部材１２のＺ方向の位置は、油入変圧器１のケース２のＺ方向のサイズの中央よりも上方で、圧接部１２２の全体が油入変圧器１のケース２に接触する位置であればよい。 The gap adjustment member 12 has a threaded rod-shaped portion 121, a flat pressure-welded portion 122 fixed to one end of the rod-shaped portion 121 on the oil-filled transformer 1 side, and a nut 123 which is a fixing member for fixing the other end of the rod-shaped portion 121 to the support member 11. The pressure-welded portion 122 corresponds to the contact portion and contacts the upper part of the case 2 without an elastic body. The pressure-welded portion 122 is made of a metal or alloy that is not an elastic body, and in one example, is made of steel. With the rod-shaped portion 121 inserted through the bolt-through hole of the fourth plate-shaped portion 114 of the support member 11, the pressure-welded portion 122 is pressed against the upper part of the case 2 to fix the other end of the rod-shaped portion 121 with the nut 123. In one example, the nut 123 is provided so as to sandwich the fourth plate-shaped portion 114 from both sides in the Y direction. The Z-direction position of the gap adjustment member 12 should be above the center of the Z-direction size of the case 2 of the oil-filled transformer 1, and should be a position where the entire pressure contact portion 122 is in contact with the case 2 of the oil-filled transformer 1.

耐震補強装置１０は、Ｘ方向の複数の位置に設けられていてもよい。 The seismic reinforcement device 10 may be provided at multiple positions in the X direction.

このように、実施の形態１では、圧接部１２２で油入変圧器１のケース２の上部を押すように隙間調整用部材１２を床面に固定した支持部材１１に固定する構造の耐震補強装置１０がケース２の両側に設けられる。これによって、地震時に静止誘導器が揺れるのを抑制することができ、耐震強度を上げることができる。また、実施の形態１では、油入変圧器１のケース２を加工することなく耐震補強を行うことができることから、設置済みの油入変圧器１に対して簡便に、後付けで耐震強度を上げることができる。さらに、従来の技術のように支持部材１１とケース２との間に弾性体を介していないので、ケース２のＹ方向の両側に設けられる支持部材１１同士の連結が不要となる。つまり、Ｙ方向の２つの支持部材１１間を連結する連結部材が不要となるので簡易な構成での耐震補強装置の実現が可能となる。さらに、支持部材１１同士の連結が不要となることで、隙間調整用部材１２がＹ方向のサイズ、すなわち奥行きのサイズに影響を受けることがない。この結果、油入変圧器１の奥行きのサイズによらず耐震補強装置１０の共用化も可能となる。 In this way, in the first embodiment, the seismic reinforcement device 10 is provided on both sides of the case 2, in which the gap adjustment member 12 is fixed to the support member 11 fixed to the floor surface so that the pressure contact portion 122 presses the upper part of the case 2 of the oil-filled transformer 1. This makes it possible to suppress the stationary inductor from shaking during an earthquake, thereby increasing the seismic strength. In addition, in the first embodiment, since the seismic reinforcement can be performed without processing the case 2 of the oil-filled transformer 1, the seismic strength of the oil-filled transformer 1 that has already been installed can be easily increased by retrofitting. Furthermore, since an elastic body is not interposed between the support member 11 and the case 2 as in the conventional technology, it is not necessary to connect the support members 11 provided on both sides of the case 2 in the Y direction. In other words, since a connecting member for connecting the two support members 11 in the Y direction is not required, it is possible to realize a seismic reinforcement device with a simple configuration. Furthermore, since the connection between the support members 11 is not required, the gap adjustment member 12 is not affected by the size in the Y direction, i.e., the size of the depth. As a result, it is possible to share the seismic reinforcement device 10 regardless of the depth size of the oil-filled transformer 1.

実施の形態２．
図４は、実施の形態２に係る油入変圧器の耐震補強装置の外観の一例を模式的に示す側面図である。図４では、油入変圧器１も示している。なお、図１から図３で説明したものと同一の構成要素には、同一の符号を付して、その説明を省略する。 Embodiment 2.
Fig. 4 is a side view showing an example of the external appearance of an earthquake-resistant reinforcement device for an oil-filled transformer according to embodiment 2. Fig. 4 also shows an oil-filled transformer 1. Note that the same components as those described in Figs. 1 to 3 are given the same reference numerals and their description will be omitted.

実施の形態２の耐震補強装置１０Ａでは、第４板状部１１４の第３板状部１１３側の端部に、外側に向かって突出する突出部１１６をさらに備える。突出部１１６は、一例では平板状の鋼材によって構成される。突出部１１６は、油入変圧器１の据え付け足３の足部３１の厚さ分だけ床面から上方へ溶接で固定され、油入変圧器１の据え付け足３を固定するアンカーボルト５１の位置に、厚さ方向に貫通する図示しないボルト固定用の孔を有する。 The seismic reinforcement device 10A of the second embodiment further includes a protruding portion 116 that protrudes outward from the end of the fourth plate-shaped portion 114 on the third plate-shaped portion 113 side. In one example, the protruding portion 116 is made of a flat steel material. The protruding portion 116 is fixed by welding upward from the floor surface by the thickness of the foot portion 31 of the mounting foot 3 of the oil-filled transformer 1, and has a bolt fixing hole (not shown) that penetrates in the thickness direction at the position of the anchor bolt 51 that fixes the mounting foot 3 of the oil-filled transformer 1.

第３板状部１１３には、１つの図示しないボルト固定用の孔が設けられる。一例では、ボルト固定用の孔は、第３板状部１１３のＹ方向の中心から、油入変圧器１とは反対側の領域に設けられる。 The third plate-shaped portion 113 is provided with one bolt fixing hole (not shown). In one example, the bolt fixing hole is provided in an area on the opposite side of the oil-filled transformer 1 from the center of the third plate-shaped portion 113 in the Y direction.

このような耐震補強装置１０Ａでは、図４に示されるように、油入変圧器１の据え付け足３を固定するアンカーボルト５１と、耐震補強装置１０Ａの配置位置に設けられる１つのアンカーボルト５２と、をそれぞれ支持部材１１の突出部１１６および第３板状部１１３のボルト固定用の孔に挿通し、ナット４，１１５で固定する。すなわち、実施の形態２では、支持部材１１の床面への固定は、油入変圧器１と一部供用して行われる。アンカーボルト５１，５２とナット４，１１５とは、固定部に対応する。固定部は、支持部材１１を床面に固定する。 As shown in FIG. 4, in such an earthquake-resistant reinforcement device 10A, an anchor bolt 51 that fixes the mounting foot 3 of the oil-filled transformer 1 and one anchor bolt 52 provided at the placement position of the earthquake-resistant reinforcement device 10A are inserted into the bolt fixing holes of the protruding portion 116 and the third plate-shaped portion 113 of the support member 11, respectively, and fixed with nuts 4 and 115. That is, in the second embodiment, the support member 11 is fixed to the floor surface in part in common with the oil-filled transformer 1. The anchor bolts 51 and 52 and the nuts 4 and 115 correspond to the fixing portion. The fixing portion fixes the support member 11 to the floor surface.

なお、上記した説明では、支持部材１１の突出部１１６を平板としたが、Ｌ型の鋼材でもよいし、コの字型の鋼材でもよい。いずれの場合でも平板の場合と比べ、設置時にかかる応力による溶接部の損傷または変形を抑えることができる。 In the above explanation, the protruding portion 116 of the support member 11 is a flat plate, but it may be an L-shaped steel material or a U-shaped steel material. In either case, damage or deformation of the welded portion due to stress applied during installation can be suppressed compared to the case of a flat plate.

実施の形態２の耐震補強装置１０Ａでは、支持部材１１の第３板状部１１３のボルト固定用の孔を１つとし、第４板状部１１４の下方に、外側に向かって突出し、油入変圧器１の据え付け足３を固定するアンカーボルト５１を挿通可能なボルト固定用の孔を有する突出部１１６が設けられる。そして、油入変圧器１の据え付け足３を固定するアンカーボルト５１と、耐震補強装置１０Ａの配置位置に設けられる１つのアンカーボルト５２と、をそれぞれ支持部材１１の突出部１１６および第３板状部１１３のボルト固定用の孔に挿通し、ナット４，１１５で固定する。これによって、実施の形態１の耐震補強装置１０では、１つの支持部材１１当たり２本のアンカーボルト５２で固定する必要があったが、実施の形態２の耐震補強装置１０Ａでは、１つの支持部材１１当たり１本のアンカーボルト５２があればよい。つまり、アンカーボルト５２の本数を減らすことができ、設置工数を低減することができる。 In the seismic reinforcement device 10A of the second embodiment, the third plate-shaped portion 113 of the support member 11 has one bolt fixing hole, and a protruding portion 116 is provided below the fourth plate-shaped portion 114, protruding outward and having a bolt fixing hole through which an anchor bolt 51 for fixing the installation foot 3 of the oil-filled transformer 1 can be inserted. The anchor bolt 51 for fixing the installation foot 3 of the oil-filled transformer 1 and one anchor bolt 52 provided at the arrangement position of the seismic reinforcement device 10A are inserted into the bolt fixing holes of the protruding portion 116 and the third plate-shaped portion 113 of the support member 11, respectively, and fixed with nuts 4 and 115. As a result, in the seismic reinforcement device 10 of the first embodiment, two anchor bolts 52 were required for fixation per one support member 11, but in the seismic reinforcement device 10A of the second embodiment, only one anchor bolt 52 is required per one support member 11. This means that the number of anchor bolts 52 can be reduced, reducing installation labor.

実施の形態３．
図５は、実施の形態３に係る油入変圧器の耐震補強装置の外観の一例を模式的に示す側面図である。図５では、油入変圧器１も示している。なお、図１から図３で説明したものと同一の構成要素には、同一の符号を付して、その説明を省略する。 Embodiment 3.
Fig. 5 is a side view showing an example of the external appearance of an earthquake-resistant reinforcement device for an oil-filled transformer according to embodiment 3. Fig. 5 also shows an oil-filled transformer 1. Note that the same components as those described in Figs. 1 to 3 are denoted by the same reference numerals, and the description thereof will be omitted.

耐震補強装置１０Ｂは、支持部材１１と、油入変圧器１のケース２を支持部材１１に固定する耐震補強取付部材１３と、を備える。耐震補強取付部材１３は、接触部材に対応する。実施の形態３では、耐震補強装置１０Ｂは、予め定められた方向であるＹ方向の片側に配置される。 The seismic reinforcement device 10B includes a support member 11 and a seismic reinforcement mounting member 13 that fixes the case 2 of the oil-filled transformer 1 to the support member 11. The seismic reinforcement mounting member 13 corresponds to the contact member. In the third embodiment, the seismic reinforcement device 10B is disposed on one side in the Y direction, which is a predetermined direction.

耐震補強取付部材１３は、油入変圧器１のケース２の上部が挿通される環状の環状部１３１と、ネジ切りされた棒状部１３２と、棒状部１３２の他方の端部を支持部材１１に固定する固定部材であるナット１３３と、を有する。環状部１３１は、接触部に対応し、ケース２の上部に弾性体を介さずに接触する。具体的には、環状部１３１は、ケース２の上部の側面に接触して周回するように設けられる。環状部１３１は、弾性体ではない金属製または合金製であり、一例では鋼材で構成される。図５の例では、油入変圧器１のケース２の上部は、Ｚ方向から見た場合に矩形状を有しているので、環状部１３１は矩形環状である。環状部１３１は、棒状部１３２の油入変圧器１側の一方の端部に固定される。棒状部１３２の一方の端部は、一例では、溶接によって環状部１３１と固定される。なお、棒状部１３２の構成は、実施の形態１で説明した隙間調整用部材１２の棒状部１２１と同様である。 The seismic reinforcement mounting member 13 has an annular portion 131 into which the upper portion of the case 2 of the oil-filled transformer 1 is inserted, a threaded rod-shaped portion 132, and a nut 133 which is a fixing member for fixing the other end of the rod-shaped portion 132 to the support member 11. The annular portion 131 corresponds to the contact portion and contacts the upper portion of the case 2 without an elastic body. Specifically, the annular portion 131 is provided so as to contact and go around the side of the upper portion of the case 2. The annular portion 131 is made of a metal or alloy that is not an elastic body, and in one example, is made of steel. In the example of FIG. 5, the upper portion of the case 2 of the oil-filled transformer 1 has a rectangular shape when viewed from the Z direction, so the annular portion 131 is a rectangular ring. The annular portion 131 is fixed to one end of the rod-shaped portion 132 on the oil-filled transformer 1 side. In one example, one end of the rod-shaped portion 132 is fixed to the annular portion 131 by welding. The configuration of the rod-shaped portion 132 is similar to that of the rod-shaped portion 121 of the gap adjustment member 12 described in embodiment 1.

実施の形態３では、油入変圧器１のケース２の上部の側面をはちまき状に囲む環状部１３１を棒状部１３２を介して油入変圧器１のＹ方向の片側に設けられる支持部材１１が支持する構造となる。このため、実施の形態１，２のように両側に耐震補強装置１０，１０Ａを備えるのではなく、片側だけに備えられるものであっても、実施の形態１，２のように耐震強度を上げることができる。また、環状部１３１が弾性体を介さずにケース２に接触するため、支持部材１１とケース２とが強固に固定されるので、支持部材１１と対向する位置にさらに支持部材を設置することが不要となり、簡易な構成での耐震補強装置１０Ｂの実現が可能となる。 In the third embodiment, the ring-shaped portion 131 that surrounds the side of the upper part of the case 2 of the oil-filled transformer 1 in a headband shape is supported by the support member 11 provided on one side of the oil-filled transformer 1 in the Y direction via the rod-shaped portion 132. Therefore, even if the seismic reinforcement device 10, 10A is provided only on one side, rather than on both sides as in the first and second embodiments, the seismic strength can be increased as in the first and second embodiments. In addition, since the ring-shaped portion 131 contacts the case 2 without an elastic body, the support member 11 and the case 2 are firmly fixed, so there is no need to install an additional support member in a position opposite the support member 11, and the seismic reinforcement device 10B can be realized with a simple configuration.

以上の実施の形態に示した構成は、一例を示すものであり、別の公知の技術と組み合わせることも可能であるし、実施の形態同士を組み合わせることも可能であるし、要旨を逸脱しない範囲で、構成の一部を省略、変更することも可能である。 The configurations shown in the above embodiments are merely examples, and may be combined with other known technologies, or the embodiments may be combined with each other. In addition, parts of the configurations may be omitted or modified without departing from the spirit of the invention.

１ 油入変圧器、２ ケース、３ 据え付け足、４，１１５，１２３，１３３ ナット、１０，１０Ａ，１０Ｂ 耐震補強装置、１１ 支持部材、１２ 隙間調整用部材、１３ 耐震補強取付部材、３１ 足部、３２ 脚部、５１，５２ アンカーボルト、１１１ 第１板状部、１１２ 第２板状部、１１３ 第３板状部、１１４ 第４板状部、１１６ 突出部、１２１，１３２ 棒状部、１２２ 圧接部、１３１ 環状部。 1 Oil-filled transformer, 2 Case, 3 Mounting foot, 4, 115, 123, 133 Nut, 10, 10A, 10B Earthquake-resistant reinforcement device, 11 Support member, 12 Gap adjustment member, 13 Earthquake-resistant reinforcement mounting member, 31 Foot, 32 Leg, 51, 52 Anchor bolt, 111 First plate-shaped portion, 112 Second plate-shaped portion, 113 Third plate-shaped portion, 114 Fourth plate-shaped portion, 116 Protruding portion, 121, 132 Rod-shaped portion, 122 Pressure-welded portion, 131 Ring-shaped portion.

Claims (7)

基礎上に固定される静止誘導器と接触させることによって耐震補強を行う静止誘導器の耐震補強装置において、
前記静止誘導器に隣接して配置され、前記基礎上に固定される支持部材と、
前記静止誘導器のケースの上部に接触し、金属製または合金製である接触部、および前記接触部に一方の端部が固定され、他方の端部が前記支持部材と固定される棒状部を有する接触部材と、
を備えることを特徴とする静止誘導器の耐震補強装置。 In a seismic reinforcement device for a stationary inductor, the device is brought into contact with a stationary inductor fixed on a foundation to perform seismic reinforcement,
a support member disposed adjacent to the stationary inductor and fixed on the foundation;
a contact member having a contact portion made of metal or alloy and in contact with an upper portion of a case of the stationary inductor, and a rod-shaped portion having one end fixed to the contact portion and the other end fixed to the support member;
A seismic reinforcement device for a stationary inductor comprising: 前記接触部は、平板状の部材であり、
前記支持部材および前記接触部材は、前記静止誘導器の予め定められた方向の両側に配置されることを特徴とする請求項１に記載の静止誘導器の耐震補強装置。 The contact portion is a flat plate-shaped member,
2. The apparatus for reinforcing a stationary inductor against earthquakes according to claim 1, wherein the support member and the contact member are disposed on both sides of the stationary inductor in a predetermined direction. 前記接触部は、前記静止誘導器の前記ケースの上部の側面に接触して周回する環状の部材であり、
前記支持部材および前記接触部材は、前記静止誘導器の予め定められた方向の片側に配置されることを特徴とする請求項１に記載の静止誘導器の耐震補強装置。 The contact portion is an annular member that contacts and goes around a side surface of an upper portion of the case of the stationary inductor,
2. The apparatus for reinforcing a stationary inductor against earthquakes according to claim 1, wherein the support member and the contact member are arranged on one side of the stationary inductor in a predetermined direction. 前記支持部材の前記基礎への固定は、前記静止誘導器とは独立して行われることを特徴とする請求項１から３のいずれか１つに記載の静止誘導器の耐震補強装置。 The seismic reinforcement device for a stationary inductor according to any one of claims 1 to 3, characterized in that the support member is fixed to the foundation independently of the stationary inductor. 前記支持部材の前記基礎への固定は、前記静止誘導器と一部共用して行われることを特徴とする請求項１から３のいずれか１つに記載の静止誘導器の耐震補強装置。 The seismic reinforcement device for a stationary inductor according to any one of claims 1 to 3, characterized in that the support member is fixed to the foundation in part in common with the stationary inductor. 前記支持部材は、
直角三角形状の第１板状部と、
前記第１板状部の斜辺に沿って前記第１板状部に対して直角となるように設けられる第２板状部と、
前記第１板状部の前記基礎に対向する隣辺に沿って前記第１板状部に対して直角となるように設けられる第３板状部と、
前記第１板状部の前記静止誘導器に対向する隣辺に沿って前記第１板状部に対して直角となるように設けられる第４板状部と、
を有し、
前記第３板状部に、前記基礎と固定される固定部を有することを特徴とする請求項４に記載の静止誘導器の耐震補強装置。 The support member is
A first plate-shaped portion having a right-angled triangular shape;
A second plate-shaped portion is provided along an oblique side of the first plate-shaped portion so as to be perpendicular to the first plate-shaped portion;
A third plate-shaped portion is provided along an adjacent side of the first plate-shaped portion facing the foundation so as to be perpendicular to the first plate-shaped portion;
a fourth plate-shaped portion provided along an adjacent side of the first plate-shaped portion facing the stationary inductor so as to be perpendicular to the first plate-shaped portion;
having
5. The apparatus for reinforcing earthquake resistance of a stationary inductor according to claim 4, wherein the third plate-shaped portion has a fixing portion which is fixed to the foundation. 前記支持部材は、
直角三角形状の第１板状部と、
前記第１板状部の斜辺に沿って前記第１板状部に対して直角となるように設けられる第２板状部と、
前記第１板状部の前記基礎に対向する隣辺に沿って前記第１板状部に対して直角となるように設けられる第３板状部と、
前記第１板状部の前記静止誘導器に対向する隣辺に沿って前記第１板状部に対して直角となるように設けられる第４板状部と、
前記第４板状部から前記静止誘導器に向かって突出する平板状の突出部と、
を有し、
前記第３板状部で前記基礎と固定され、前記突出部で前記静止誘導器と共用して前記基礎と固定される固定部を有することを特徴とする請求項５に記載の静止誘導器の耐震補強装置。 The support member is
A first plate-shaped portion having a right-angled triangular shape;
A second plate-shaped portion is provided along an oblique side of the first plate-shaped portion so as to be perpendicular to the first plate-shaped portion;
A third plate-shaped portion is provided along an adjacent side of the first plate-shaped portion facing the foundation so as to be perpendicular to the first plate-shaped portion;
a fourth plate-shaped portion provided along an adjacent side of the first plate-shaped portion facing the stationary inductor so as to be perpendicular to the first plate-shaped portion;
A flat-plate-shaped protruding portion protruding from the fourth plate-shaped portion toward the stationary inductor;
having
The seismic reinforcement device for a stationary inductor according to claim 5, further comprising a fixing portion which is fixed to the foundation at the third plate-shaped portion and which is fixed to the foundation in common with the stationary inductor at the protruding portion.
JP2021097325A 2021-06-10 2021-06-10 Seismic reinforcement device for static inductors Active JP7471256B2 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007312486A (en) 2006-05-17 2007-11-29 Chugoku Electric Power Co Inc:The Cramping frame for transformer
JP2013211510A (en) 2012-02-27 2013-10-10 Tokkyokiki Corp Earthquake reduction device for transformer and method of fitting earthquake reduction device for transformer
JP5538006B2 (en) 2010-03-15 2014-07-02 昭和電工株式会社 Light emitting diode
JP6151198B2 (en) 2014-01-31 2017-06-21 株式会社日立製作所 Power demand adjustment system, power demand adjustment method, and power demand adjustment display terminal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007312486A (en) 2006-05-17 2007-11-29 Chugoku Electric Power Co Inc:The Cramping frame for transformer
JP5538006B2 (en) 2010-03-15 2014-07-02 昭和電工株式会社 Light emitting diode
JP2013211510A (en) 2012-02-27 2013-10-10 Tokkyokiki Corp Earthquake reduction device for transformer and method of fitting earthquake reduction device for transformer
JP6151198B2 (en) 2014-01-31 2017-06-21 株式会社日立製作所 Power demand adjustment system, power demand adjustment method, and power demand adjustment display terminal

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