JP4497795B2 - Seismic pads, insulator mounting structure, and transformer equipment - Google Patents

Seismic pads, insulator mounting structure, and transformer equipment Download PDF

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Publication number
JP4497795B2
JP4497795B2 JP2002189387A JP2002189387A JP4497795B2 JP 4497795 B2 JP4497795 B2 JP 4497795B2 JP 2002189387 A JP2002189387 A JP 2002189387A JP 2002189387 A JP2002189387 A JP 2002189387A JP 4497795 B2 JP4497795 B2 JP 4497795B2
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insulator
earthquake
main body
attached
flange
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JP2004032959A (en
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伸夫 室田
健 須賀
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Bridgestone Corp
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Bridgestone Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、耐震パッド、碍子機器取付構造、及び変電設備用機器に関する。
【0002】
【従来の技術】
従来から、たとえば変電所などの変電設備では、絶縁機器として、種々の碍子機器が用いられている。たとえば、変圧器、ガス遮断機、避雷器などにおいて、変圧器本体などの機器本体に対し碍子機器が取り付けられて使用されている。
【0003】
ところで、従来では、上記した機器本体と碍子機器とは、これらの固有振動数が近接していることがあった。このような場合に、機器本体に対したとえば地震等により振動が作用すると、機器本体と碍子機器とが共振するので、碍子機器の破損、転倒、あるいは内部に充填された油の漏れなどが発生するおそれがある。
【0004】
このような事態の発生を防止するためには、碍子機器の固有振動数が、機器本体の固有振動数と大きく異なるようにすることが考えられる。しかし、碍子機器の固有振動数の変更には、材料や形状の変更を伴うため、取り付け位置の制約を受けたり、コストの上昇を招いたりすることがある。
【0005】
【発明が解決しようとする課題】
本発明は上記事実を考慮し、碍子機器の形状や材料を変更することなく、地震時の破損や転倒などを効果的に防止可能な耐震パッド、碍子機器取付構造、及び変電設備用機器を得ることを課題とする。
【0006】
【課題を解決するための手段】
請求項1に記載の発明では、変電設備を構成する機器本体と、この機器本体に取り付けられる碍子機器との間に介在される耐震パッドであって、中実の環状ゴムで構成され碍子機器の振動周期をみかけ上長周期化する弾性部材と、前記弾性部材に取り付けられて碍子機器への取付用とされる上連結フランジと、前記弾性部材に取り付けられた下連結フランジと、前記下連結フランジの下側で下連結フランジに接触して取り付けられ前記機器本体への取付用とされる取付フランジと、を含んで構成されていることを特徴とする。
【0007】
したがって、変電設備を構成する機器本体に対し、この耐震パッドを介在させて碍子機器が取り付けられる。耐震パッドは弾性部材を含んで構成されており、碍子機器の振動周期がみかけ状長周期化される。換言すれば、碍子機器と弾性部材とを全体で考えたときの固有振動数が、機器本体の固有振動数と異なる。したがって、地震等により機器本体が振動しても、碍子機器は共振することはなく、碍子機器の破損や脱落(さらには、碍子機器の内部に油などの液体が充填されている場合には液体漏れ)が防止される。
【0008】
しかも、耐震パッドを機器本体と碍子機器との間に介在させるだけなので、碍子機器の材料や形状を変更する必要がない。また、耐震パッドの弾性部材は中実の環状ゴムで構成されている。このため、碍子機器の取り付け位置に制限が生じたり、コストの上昇を招いたりすることもない。加えて、上連結フランジ、下連結フラジ及び取付フランジを有しているので、碍子機器や機器本体への取り付けが容易になる。
請求項2に記載の発明では、請求項1に記載の発明において、前記取付フランジが、前記弾性部材、前記上連結フランジ及び前記下連結フランジよりも側方に延出されているので、機器本体への取り付けが容易になる。
【0009】
請求項1又は請求項2に係る弾性部材としては、上記したように、この弾性部材と碍子機器との全体での固有振動数が、機器本体の固有振動数と異なるようなものであれば特に限定されないが、たとえば、請求項3に記載のように、前記弾性部材が、せん断弾性率0.4〜1.0(MPa)のゴムにより構成されていると、より確実に碍子機器の共振を防止できる。
【0011】
請求項4に記載の発明では、変電設備を構成する機器本体に碍子機器を取り付けるための碍子機器取付構造であって、前記機器本体と前記碍子機器との間に介在された請求項1〜請求項3のいずれかに記載の耐震パッド、を有することを特徴とする。
【0012】
すなわち、この碍子機器取付構造では、変電設備を構成する機器本体と碍子機器との間に、請求項1〜請求項3のいずれかに記載の耐震パッドが介在されており、碍子機器の振動周期がみかけ状長周期化されている。碍子機器と耐震パッドとを全体で考えたときの固有振動数が、機器本体の固有振動数と異なっているので、地震等により機器本体が振動しても、碍子機器は共振することはなく、碍子機器の破損や脱落(さらには、碍子機器の内部に油などの液体が充填されている場合には、液体漏れ)が防止される。
【0013】
しかも、耐震パッドを機器本体と碍子機器との間に介在させるだけなので、碍子機器の材料や形状を変更する必要がない。このため、碍子機器の取り付け位置に制限が生じたり、コストの上昇を招いたりすることもない。
【0014】
請求項5に記載の発明では、変電設備を構成する機器本体と、前記機器本体に取り付けられる碍子機器と、前記機器本体と前記碍子機器との間に介在された請求項1〜請求項3のいずれかに記載の耐震パッドと、を有することを特徴とする。
【0015】
すなわち、機器本体に対し碍子機器が取り付けられるので、碍子機器によって、電気導体(送配電線など)を絶縁し、支持することができる。
【0016】
機器本体と碍子機器との間には、請求項1〜請求項3のいずれかに記載の耐震パッドが介在されており、碍子機器の振動周期がみかけ状長周期化されている。碍子機器と耐震パッドとを全体で考えたときの固有振動数が、機器本体の固有振動数と異なっているので、地震等により聞き本体が振動しても、碍子機器は共振することはなく、碍子機器の破損や脱落(さらには、碍子機器の内部に油などの液体が充填されている場合には、液体漏れ)が防止される。
【0017】
しかも、耐震パッドを機器本体と碍子機器との間に介在させるだけなので、碍子機器の材料や形状を変更する必要がない。このため、碍子機器の取り付け位置に制限が生じたり、コストの上昇を招いたりすることもない。
【0018】
なお、上記請求項1〜請求項5の記載において、「機器本体」は、変電設備を構成する機器であれば特に限定されないが、たとえば、変圧器、ガス遮断機、避雷器などを挙げることができる。この「機器本体」によって構成される「変電設備」としても特に限定されず、いわゆる変電所が含まれるのはもちろんであるが、さらには、工場や各種プラント内の変電設備、鉄道に電力を供給するための変電設備、発電所内の変電設備などが広く含まれる。また、「碍子機器」としても、上記「機器本体」に取り付けられ、電気導体を絶縁して支持するものであれば限定されない。
【0019】
【発明の実施の形態】
図1には、本発明の一実施形態の耐震パッド12を介在させることにより、碍子14が取り付けられた変圧器本体16が示されている。また、図2には、本実施形態の碍子取付構造(碍子機器取付構造)によって変圧器本体16に取り付けられた碍子14が、図3(A)及び(B)には耐震パッド12がそれぞれ拡大して示されている。
【0020】
図2に示すように、碍子14は、柱状の碍子本体18を備えており、この碍子本体18の頂部18Tに、送電線40などの電気導体が絶縁状態で支持される。
【0021】
碍子本体18の略中間部には、フランジ18Fが取り付けられている。このフランジ18Fと、変圧器本体16の取り付け部16Cとの間に、耐震パッド12が介在され、碍子14が変圧器本体16に取り付けられている。
【0022】
図3に示すように、耐震パッド12は、環状に形成されたゴムリング20と、このゴムリング20の軸方向の両端面にそれぞれ取り付けられた鋼製の上連結フランジ22、下連結フランジ24とを備え、さらに、下連結フランジ24には、取付ボルト26によって、鋼製の取付フランジ28が取り付けられている。上連結フランジ22には、所定の位置に雌ネジ30が形成されており、図2に示すように、取付ボルト32によって、碍子14のフランジ18Fに取り付けられる。また、取付フランジ28には、ボルト孔34が形成されている。変圧器本体16の取り付け部16Cに形成された取付孔36と、取付フランジ28のボルト孔34とを一致させて取付ボルト38を挿通しナット締めすることで、耐震パッド12が変圧器本体16の取り付け部16Cに取り付けられる。
【0023】
ゴムリング20は、耐震パッド12と碍子14との総体での固有振動数が、変圧器本体16の固有振動数と異なるようにすることで、碍子14がみかけ状長周期化されるように、その物理的性質が決められている。したがって、変圧器本体16が、たとえば地震などによって振動した場合であっても、碍子14の共振が防止され、応答加速度及び地震外力が低減される。
【0024】
そして、本実施形態では、変圧器本体16、碍子14、及び変圧器本体16と碍子14との間に介在された耐震パッド12により、本発明の変電設備用機器が構成されている。
【0025】
次に、本実施形態の作用を説明する。
【0026】
変圧器本体16に耐震パッド12を介在させて取り付けられた碍子14は、その頂部18Tで、送電線40などの電気導体を絶縁状態で支持できる。
【0027】
耐震パッド12を構成しているゴムリング20は、耐震パッド12と碍子14との総体での固有振動数が、変圧器本体16の固有振動数と異なるように、その物理的性質が決められており、碍子14がみかけ状長周期化されている。したがって、変圧器本体16が、たとえば地震などによって振動した場合であっても、碍子14の共振が防止され、応答加速度及び地震外力が低減される。
【0028】
このように、碍子14の共振が防止されるため、破損や、変圧器本体16からの脱落、転倒などが防止される。碍子14には、内部に油が充填されたものがあるが、このような碍子の場合には、油漏れも防止できる。
【0029】
しかも、碍子14自体の固有振動数が、変圧器本体16の固有振動数と近接している場合でも、碍子14と耐震パッド12(ゴムリング20)とを総体で考えた場合には、この固有振動数が変圧器本体16の固有振動数と大きく異なるようにできる。したがって、碍子14の共振を防止するために、碍子14自体の固有振動数を特定の値にする必要はなく、碍子14の材料や形状に制限が生じない。このため、碍子14を低コストで構成でき、碍子14の取付位置などにも制限が生じない。
【0030】
本発明の耐震パッド12を構成するゴムリング20としては、このように、碍子14と耐震パッド12(ゴムリング20)との総体での固有振動数を、変圧器本体16の固有振動数と異なるようにするものであれば限定されないが、たとえば、天然ゴム材料又は高減衰ゴム材料で構成された、せん断弾性率0.4〜1.0(MPa)のものを使用すると、より確実に碍子14の共振を防止できるので、好ましい。
【0031】
また、ゴムリング20によって、振動のエネルギーをより効果的に減衰(散逸)させるためには、損失係数が0.04〜0.40の範囲のものが好ましい。この損失係数とは、ゴムリング20に作用する応力とひずみの位相差をδとしたときにtan(δ)で表され、この数値が大きいほど、ゴムの内部摩擦が大きい。このため、せん断変形よって振動エネルギーの多くが熱エネルギーに変換され、大きな横揺れ等の振動エネルギーを確実に吸収して、振動を減衰することができる。
【0032】
さらに、ゴムリング20に作用した外力でゴムリング20が破断されないようにするためには、破断伸びが500%以上、破断強度が8.0MPa以上のものが好ましい。
【0033】
上記説明では、本発明の耐震パッドとして、ゴムリング20に上連結フランジ22、下連結フランジ24及び取付フランジ28が取り付けられたものを例に挙げた。これらのフランジを備えた構成とすると、変圧器本体16や碍子14への取り付けが容易になる。
【0034】
本発明において、変電設備を構成する機器本体としても、上記したものに限定されない。機器本体としては、変圧器、ガス遮断機、避雷器などを挙げることができる。この機器本体によって構成される変電設備としては、変電所の他、工場や各種プラント内の変電設備、鉄道に電力を供給するための変電設備、発電所内の変電設備などが広く含まれる。また、本発明に係る碍子機器としても、上記機器本体に取り付けられ、電気導体を絶縁して支持するものであれば限定されない。したがって、これらの適切な組み合わせによって、本発明の変電設備用機器を構成することができる。
【0035】
【実施例】
以下に、本発明を実施例により説明するが、本発明はこの実施例に限定されない。
【0036】
図4には、上記実施形態の耐震パッド12を使用した場合と、使用しない場合とを比較した、振動台実験の概略が示されている。実施例としては、固有振動数12.5Hzに調整された鋼製のフレーム台座42に、上記実施形態の耐震パッド12を介在させて、固有振動数13Hz程度の碍子14を取り付けた。耐震パッド12のゴムリング20は、天然ゴム材料製で、せん断弾性率が0.4MPa、損失係数(tan(δ))が0.06、破断伸びが600%、破断強度が17MPaのものを使用した。この耐震パッド12を介在させたことで、碍子14のみかけ状の固有振動数は3.0Hzになった。
【0037】
また、比較例として、フレーム台座42に、耐震パッド12を介在させることなく直接的に、碍子14を取り付けた。
【0038】
そして、いずれの場合においても、IEEE693−1997の設計応答スペクトルを基に、ランダム位相で作成された人工波を、目標最大加速度振幅0.250gおよび0.375gでフレーム台座42に入力し、碍子14の取り付け部(フランジ18F)及び頂上(頂部18T)において、応答加速度を測定した。結果を図5に示す。
【0039】
図5から分かるように、本発明の実施例では、測定位置が碍子14の取り付け部(フランジ18F)であっても頂上(頂部18T)であっても、比較例よりも応答加速度が小さくなっている。
【0040】
【発明の効果】
本発明は上記の構成としたので、碍子機器の形状や材料を変更することなく、地震時の破損や転倒などを効果的に防止できる。
【図面の簡単な説明】
【図1】本発明の一実施形態の耐震パッドを介在させることにより碍子が取り付けられた変圧器本体を示す斜視図である。
【図2】本発明の一実施形態の碍子取付構造(碍子機器取付構造)によって変圧器本体に取り付けられた碍子を拡大して示す一部破断正面図である。
【図3】本発明の一実施形態の耐震パッドを示し、(A)は平面図、(B)は一部破断正面図である。
【図4】本発明の実施例における振動台実験の概略構成を示す正面図である。
【図5】本発明の実施例の振動台実験の結果を示すグラフである。
【符号の説明】
12 耐震パッド
14 碍子
16 変圧器本体(機器本体)
20 ゴムリング(ゴム)
22 上連結フランジ(取り付け部材)
24 下連結フランジ(取り付け部材)
28 取付フランジ(取り付け部材)
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an earthquake-resistant pad, an insulator device mounting structure, and a transformer equipment.
[0002]
[Prior art]
Conventionally, in a substation facility such as a substation, various insulator devices have been used as insulating devices. For example, in a transformer, a gas circuit breaker, a lightning arrester, etc., an insulator device is attached to a device body such as a transformer body.
[0003]
By the way, conventionally, the above-described device main body and the insulator device sometimes have close natural frequencies. In such a case, if vibration is applied to the device main body due to, for example, an earthquake, the device main body and the insulator device resonate, which may cause damage to the insulator device, overturning, or leakage of oil filled inside. There is a fear.
[0004]
In order to prevent the occurrence of such a situation, it is conceivable that the natural frequency of the insulator device is greatly different from the natural frequency of the device body. However, since the change in the natural frequency of the insulator device is accompanied by a change in the material and shape, the attachment position is restricted and the cost may be increased.
[0005]
[Problems to be solved by the invention]
In view of the above facts, the present invention obtains an earthquake-resistant pad, an insulator mounting structure, and a substation equipment that can effectively prevent damage or falling during an earthquake without changing the shape or material of the insulator. This is the issue.
[0006]
[Means for Solving the Problems]
In invention of Claim 1, it is an earthquake-resistant pad interposed between the apparatus main body which comprises a substation equipment, and the insulator apparatus attached to this apparatus main body, Comprising: It is comprised with the solid cyclic | annular rubber | gum, An elastic member that looks like a vibration cycle and has a long period, an upper connection flange that is attached to the elastic member and is used for attachment to a lever device, a lower connection flange that is attached to the elastic member, and the lower connection flange And a mounting flange that is mounted in contact with the lower connecting flange on the lower side and is used for mounting on the device main body.
[0007]
Therefore, an insulator apparatus is attached to the apparatus main body which comprises a substation installation through this seismic pad. The earthquake-resistant pad is configured to include an elastic member, and the vibration period of the insulator device is increased in an apparent long period. In other words, the natural frequency when the insulator device and the elastic member are considered as a whole is different from the natural frequency of the device body. Therefore, even if the device main body vibrates due to an earthquake or the like, the insulator device will not resonate, and the insulator device may be damaged or dropped (or liquid if the inside of the insulator device is filled with oil or other liquid). Leakage) is prevented.
[0008]
Moreover, since the earthquake-resistant pad is merely interposed between the device main body and the insulator device, it is not necessary to change the material and shape of the insulator device. The elastic member of the earthquake-resistant pad is made of solid annular rubber . For this reason, there are no restrictions on the attachment position of the insulator device and no increase in cost is caused. In addition, since it has an upper connecting flange, a lower connecting flange, and a mounting flange, it can be easily attached to a lever device or a device main body.
According to a second aspect of the present invention, in the first aspect of the invention, the mounting flange extends laterally from the elastic member, the upper connection flange, and the lower connection flange. Easy to attach to.
[0009]
As described above, the elastic member according to claim 1 or 2 is particularly suitable as long as the natural frequency of the elastic member and the insulator device as a whole is different from the natural frequency of the device body. Although not limited, for example, if the elastic member is made of rubber having a shear elastic modulus of 0.4 to 1.0 (MPa) as described in claim 3 , resonance of the insulator device is more reliably performed. Can be prevented.
[0011]
In invention of Claim 4, it is a lever apparatus attachment structure for attaching a lever apparatus to the apparatus main body which comprises a substation installation, Comprising: The said Claim 1-Claim interposed between the said apparatus main body and the said lever apparatus. It has the earthquake-proof pad in any one of claim | item 3. It is characterized by the above-mentioned.
[0012]
That is, in this insulator device mounting structure, the earthquake-resistant pad according to any one of claims 1 to 3 is interposed between the device main body and the insulator device constituting the substation, and the vibration period of the insulator device is It has a long period of appearance. Since the natural frequency when the insulator device and the earthquake-resistant pad are considered as a whole is different from the natural frequency of the device body, the insulator device will not resonate even if the device body vibrates due to an earthquake, etc. Damage and dropout of the insulator device (and liquid leakage when the inside of the insulator device is filled with a liquid such as oil) are prevented.
[0013]
Moreover, since the earthquake-resistant pad is merely interposed between the device main body and the insulator device, it is not necessary to change the material and shape of the insulator device. For this reason, there are no restrictions on the attachment position of the insulator device and no increase in cost is caused.
[0014]
In invention of Claim 5, the apparatus main body which comprises a substation installation, the insulator apparatus attached to the said apparatus main body, The said apparatus main body, and the said insulator apparatus are interposed between the Claims 1-3. A seismic pad according to any one of the above.
[0015]
That is, since the lever device is attached to the device main body, the electric conductor (such as a transmission / distribution line) can be insulated and supported by the lever device.
[0016]
The earthquake-resistant pad according to any one of claims 1 to 3 is interposed between the device main body and the insulator device, and the vibration period of the insulator device is apparently lengthened. Since the natural frequency when the insulator device and the earthquake-resistant pad are considered as a whole is different from the natural frequency of the device body, the insulator device will not resonate even if the body vibrates due to an earthquake, etc. Damage and dropout of the insulator device (and liquid leakage when the inside of the insulator device is filled with a liquid such as oil) are prevented.
[0017]
Moreover, since the earthquake-resistant pad is merely interposed between the device main body and the insulator device, it is not necessary to change the material and shape of the insulator device. For this reason, there are no restrictions on the attachment position of the insulator device and no increase in cost is caused.
[0018]
In addition, in the description of the first to fifth aspects, the “device main body” is not particularly limited as long as it is a device constituting a substation facility, and examples thereof include a transformer, a gas circuit breaker, a lightning arrester, and the like. . There is no particular limitation on the “transformation equipment” composed of this “equipment main body”, and of course, so-called substations are included, and further, power is supplied to substation equipment and railways in factories and various plants. Substation facilities for power generation, substation facilities in power plants, etc. are widely included. Further, the “insulator device” is not limited as long as it is attached to the “device body” and supports the electrical conductors by insulation.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a transformer body 16 to which an insulator 14 is attached by interposing an earthquake-resistant pad 12 according to an embodiment of the present invention. 2 shows the insulator 14 attached to the transformer body 16 by the insulator attachment structure (insulator device attachment structure) of the present embodiment, and FIGS. 3A and 3B show the earthquake-resistant pad 12 enlarged. It is shown as
[0020]
As shown in FIG. 2, the insulator 14 includes a columnar insulator body 18, and an electric conductor such as a power transmission line 40 is supported on the top portion 18 </ b> T of the insulator body 18 in an insulated state.
[0021]
A flange 18 </ b> F is attached to a substantially middle portion of the insulator body 18. The seismic pad 12 is interposed between the flange 18F and the mounting portion 16C of the transformer body 16, and the insulator 14 is attached to the transformer body 16.
[0022]
As shown in FIG. 3, the seismic pad 12 includes an annular rubber ring 20, steel upper connection flanges 22 and lower connection flanges 24 respectively attached to both axial end surfaces of the rubber ring 20. Furthermore, a steel mounting flange 28 is attached to the lower connecting flange 24 by means of mounting bolts 26. The upper connection flange 22 has a female screw 30 formed at a predetermined position, and is attached to the flange 18F of the insulator 14 by a mounting bolt 32 as shown in FIG. A bolt hole 34 is formed in the mounting flange 28. The mounting holes 36 formed in the mounting portion 16C of the transformer main body 16 and the bolt holes 34 of the mounting flange 28 are aligned with each other, and the mounting bolts 38 are inserted and tightened with the nuts. It is attached to the attachment portion 16C.
[0023]
The rubber ring 20 is configured such that the natural frequency of the seismic pad 12 and the insulator 14 as a whole is different from the natural frequency of the transformer main body 16 so that the insulator 14 has an apparent long period. Its physical properties are determined. Therefore, even when the transformer main body 16 vibrates due to, for example, an earthquake, resonance of the insulator 14 is prevented, and response acceleration and earthquake external force are reduced.
[0024]
In this embodiment, the transformer main body 16, the insulator 14, and the seismic pad 12 interposed between the transformer main body 16 and the insulator 14 constitute the transformer facility equipment of the present invention.
[0025]
Next, the operation of this embodiment will be described.
[0026]
The insulator 14 attached to the transformer main body 16 with the earthquake-resistant pad 12 interposed can support an electrical conductor such as the power transmission line 40 in an insulated state at the top portion 18T.
[0027]
The physical properties of the rubber ring 20 constituting the seismic pad 12 are determined so that the natural frequency of the seismic pad 12 and the insulator 14 as a whole is different from the natural frequency of the transformer body 16. The insulator 14 has an apparent long period. Therefore, even when the transformer main body 16 vibrates due to, for example, an earthquake, resonance of the insulator 14 is prevented, and response acceleration and earthquake external force are reduced.
[0028]
In this way, since the resonance of the insulator 14 is prevented, breakage, drop-off from the transformer body 16, falling, etc. are prevented. Some insulators 14 are filled with oil. In such an insulator, oil leakage can be prevented.
[0029]
Moreover, even when the natural frequency of the insulator 14 itself is close to the natural frequency of the transformer body 16, when the insulator 14 and the earthquake-resistant pad 12 (rubber ring 20) are considered as a whole, this natural frequency The frequency can be greatly different from the natural frequency of the transformer body 16. Therefore, in order to prevent the resonance of the insulator 14, it is not necessary to set the natural frequency of the insulator 14 itself to a specific value, and the material and shape of the insulator 14 are not limited. For this reason, the insulator 14 can be configured at low cost, and there is no restriction on the mounting position of the insulator 14.
[0030]
Thus, as the rubber ring 20 constituting the seismic pad 12 of the present invention, the natural frequency of the insulator 14 and the seismic pad 12 (rubber ring 20) as a whole is different from the natural frequency of the transformer body 16. Although it will not be limited if it makes it, if it uses the thing of the shear elastic modulus 0.4-1.0 (MPa) comprised, for example with a natural rubber material or a high damping rubber material, insulator 14 will be ensured more reliably. Can be prevented, which is preferable.
[0031]
Further, in order to more effectively attenuate (dissipate) vibration energy by the rubber ring 20, it is preferable that the loss coefficient is in the range of 0.04 to 0.40. This loss factor is represented by tan (δ) where δ is the phase difference between the stress and strain acting on the rubber ring 20, and the larger this value, the greater the internal friction of the rubber. For this reason, most of vibration energy is converted into thermal energy by shear deformation, and vibration energy such as a large roll can be reliably absorbed to attenuate the vibration.
[0032]
Furthermore, in order to prevent the rubber ring 20 from being broken by an external force acting on the rubber ring 20, it is preferable that the breaking elongation is 500% or more and the breaking strength is 8.0 MPa or more.
[0033]
In the above description, as the seismic pad of the present invention, the rubber ring 20 with the upper connecting flange 22, the lower connecting flange 24, and the mounting flange 28 attached thereto is taken as an example . If it is set as the structure provided with these flanges, the attachment to the transformer main body 16 or the insulator 14 will become easy.
[0034]
In the present invention, the device main body constituting the substation equipment is not limited to the above. Examples of the device main body include a transformer, a gas circuit breaker, and a lightning arrester. The substation equipment constituted by the device main body includes, in addition to substations, substation equipment in factories and various plants, substation equipment for supplying power to railways, substation equipment in power plants, and the like. Also, the insulator device according to the present invention is not limited as long as it is attached to the device body and insulates and supports the electric conductor. Therefore, the apparatus for substation equipment of this invention can be comprised by these appropriate combinations.
[0035]
【Example】
Hereinafter, the present invention will be described with reference to examples, but the present invention is not limited to these examples.
[0036]
FIG. 4 shows an outline of a shaking table experiment comparing the case where the earthquake resistant pad 12 of the above embodiment is used with the case where it is not used. As an example, an insulator 14 having a natural frequency of about 13 Hz was attached to a steel frame pedestal 42 adjusted to a natural frequency of 12.5 Hz with the earthquake-resistant pad 12 of the above embodiment interposed therebetween. The rubber ring 20 of the seismic pad 12 is made of a natural rubber material and has a shear modulus of 0.4 MPa, a loss factor (tan (δ)) of 0.06, a breaking elongation of 600%, and a breaking strength of 17 MPa. did. By interposing this seismic pad 12, the apparent natural frequency of the insulator 14 became 3.0 Hz.
[0037]
Further, as a comparative example, the insulator 14 was directly attached to the frame base 42 without interposing the seismic pad 12.
[0038]
In any case, based on the design response spectrum of IEEE693-1997, an artificial wave generated with a random phase is input to the frame base 42 with target maximum acceleration amplitudes of 0.250 g and 0.375 g, and the insulator 14 The response acceleration was measured at the attachment portion (flange 18F) and the top (top portion 18T). The results are shown in FIG.
[0039]
As can be seen from FIG. 5, in the embodiment of the present invention, the response acceleration is smaller than that of the comparative example regardless of whether the measurement position is the attachment portion (flange 18F) of the insulator 14 or the top (top portion 18T). Yes.
[0040]
【The invention's effect】
Since this invention was set as said structure, it can prevent effectively the failure | damage at the time of an earthquake, a fall, etc., without changing the shape and material of a lever apparatus.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a transformer main body to which an insulator is attached by interposing an earthquake-resistant pad according to an embodiment of the present invention.
FIG. 2 is a partially broken front view showing, in an enlarged manner, an insulator attached to a transformer body by an insulator attachment structure (insulator device attachment structure) according to an embodiment of the present invention.
3A and 3B show a seismic pad according to an embodiment of the present invention, in which FIG. 3A is a plan view and FIG. 3B is a partially broken front view.
FIG. 4 is a front view showing a schematic configuration of a shaking table experiment in an example of the present invention.
FIG. 5 is a graph showing the results of a shaking table experiment of an example of the present invention.
[Explanation of symbols]
12 Seismic pad 14 Insulator 16 Transformer body (equipment body)
20 Rubber ring (rubber)
22 Upper connecting flange (Mounting member)
24 Lower connection flange (mounting member)
28 Mounting flange (Mounting member)

Claims (5)

変電設備を構成する機器本体と、この機器本体に取り付けられる碍子機器との間に介在される耐震パッドであって、
中実の環状ゴムで構成され碍子機器の振動周期をみかけ上長周期化する弾性部材と、
前記弾性部材に取り付けられて碍子機器への取付用とされる上連結フランジと、
前記弾性部材に取り付けられた下連結フランジと、
前記下連結フランジの下側で下連結フランジに接触して取り付けられ前記機器本体への取付用とされる取付フランジと、
を含んで構成されていることを特徴とする耐震パッド。
A seismic pad interposed between the equipment body constituting the substation equipment and the insulator equipment attached to the equipment body,
An elastic member that is made of solid annular rubber and has a long period of time due to the vibration period of the insulator device;
An upper connecting flange that is attached to the elastic member and is used for attachment to an insulator device;
A lower connecting flange attached to the elastic member;
A mounting flange that is mounted on the lower side of the lower connecting flange in contact with the lower connecting flange and is used for mounting to the device body;
A seismic pad characterized by comprising.
前記取付フランジが、前記弾性部材、前記上連結フランジ及び前記下連結フランジよりも側方に延出されていることを特徴とする請求項2に記載の耐震パッド。The earthquake-resistant pad according to claim 2, wherein the mounting flange extends laterally from the elastic member, the upper connection flange, and the lower connection flange . 前記弾性部材を構成するゴムのせん断弾性率が、0.4〜1.0(MPa)であることを特徴とする請求項1又は請求項2に記載の耐震パッド。Seismic pad according to claim 1 or claim 2 shear modulus of the rubber constituting the elastic member, characterized in that a 0.4 to 1.0 (MPa). 変電設備を構成する機器本体に碍子機器を取り付けるための碍子機器取付構造であって、
前記機器本体と前記碍子機器との間に介在された請求項1〜請求項3のいずれかに記載の耐震パッド、
を有することを特徴とする碍子機器取付構造。
An insulator device mounting structure for attaching an insulator device to the device body constituting the substation equipment,
The earthquake-resistant pad in any one of Claims 1-3 interposed between the said apparatus main body and the said insulator apparatus,
An insulator mounting structure characterized by comprising:
変電設備を構成する機器本体と、
前記機器本体に取り付けられる碍子機器と、
前記機器本体と前記碍子機器との間に介在された請求項1〜請求項3のいずれかに記載の耐震パッドと、
を有することを特徴とする変電設備用機器。
The main body of the substation equipment,
An insulator device attached to the device body;
The earthquake-resistant pad according to any one of claims 1 to 3, which is interposed between the device main body and the insulator device,
A device for a substation facility, characterized by comprising:
JP2002189387A 2002-06-28 2002-06-28 Seismic pads, insulator mounting structure, and transformer equipment Expired - Fee Related JP4497795B2 (en)

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KR100604175B1 (en) 2005-12-15 2006-07-28 벽산엔지니어링주식회사 A high voltage substation with high endurance level against earthquake
KR101164497B1 (en) * 2010-09-10 2012-07-18 한국전력공사 Seismic isolation bearings of electric insulator
KR101530347B1 (en) * 2015-01-26 2015-06-29 (유)전일기술단 Suspension device for transformer in substation

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