JPH01220414A - Oil-filled electric apparatus - Google Patents
Oil-filled electric apparatusInfo
- Publication number
- JPH01220414A JPH01220414A JP4458488A JP4458488A JPH01220414A JP H01220414 A JPH01220414 A JP H01220414A JP 4458488 A JP4458488 A JP 4458488A JP 4458488 A JP4458488 A JP 4458488A JP H01220414 A JPH01220414 A JP H01220414A
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- oil
- outer box
- absorber
- box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000006096 absorbing agent Substances 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 230000032683 aging Effects 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000006866 deterioration Effects 0.000 abstract 1
- 229920003051 synthetic elastomer Polymers 0.000 abstract 1
- 229920003002 synthetic resin Polymers 0.000 abstract 1
- 239000000057 synthetic resin Substances 0.000 abstract 1
- 239000005061 synthetic rubber Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Regulation Of General Use Transformers (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、例えば油入変圧器や油入りアクドルなど、
磁気ひずみや電磁力などにより機器本体が振動する油入
電気機器に関するものである。[Detailed Description of the Invention] [Industrial Application Field] This invention is applicable to oil-filled transformers, oil-filled axles, etc.
This relates to oil-filled electrical equipment whose main body vibrates due to magnetostriction, electromagnetic force, etc.
［従来の技術］
−ｍに、例えば油入変圧器や油入りアクドルなどの油入
電気機器では、鉄心および巻線に生じる磁気ひずみや電
磁力などにより機器本体に振動が発生する。この振動は
、絶縁油によってその動油圧として外箱に伝達され、周
囲への振動、騒音の発生の原因となっている。特に、側
板および補強板からなる外箱の共振周波数と、絶縁油を
介して伝達され電源周波数の２倍を基本波とし高調波成
分を含む励振周波数とが一致して共振する渇きには、外
箱の振動、騒音は著しく増大する。[Prior Art] - For example, in oil-filled electrical equipment such as oil-filled transformers and oil-filled paddles, vibrations occur in the equipment body due to magnetostriction and electromagnetic force generated in the iron core and windings. This vibration is transmitted to the outer box as the hydraulic pressure by the insulating oil, causing vibration and noise to the surrounding area. In particular, when the resonant frequency of the outer box consisting of side plates and reinforcing plates matches and resonates with the excitation frequency, which is transmitted via insulating oil and has a fundamental wave twice the power frequency and includes harmonic components, The vibration and noise of the box will increase significantly.
この振動、騒音を低減させるためには、より正確な外箱
の振動解析が必要となってくる。ところが、外箱の振動
に大きな影響を及ぼす絶縁油の付加質量は、その振動モ
ードによって変化するので、振動解析はかなり複雑にな
ってしまう。従って、外箱の振動を、油入電気機器の設
計時に正確に予測するためには、膨大な解析計算を必要
とし、さらに場合によっては、製造途中で外箱の振動を
実測して、外箱の構造に修正を加えなければならないよ
うなこともある。このように、振動解析による油入電気
機器の振動騒音対策には、多大な時間と費用とが必要で
ある。In order to reduce this vibration and noise, more accurate vibration analysis of the outer box is required. However, the added mass of the insulating oil, which has a large effect on the vibration of the outer box, changes depending on the vibration mode, making vibration analysis quite complicated. Therefore, in order to accurately predict the vibration of the outer box when designing oil-filled electrical equipment, a huge amount of analytical calculations are required, and in some cases, the vibration of the outer box is actually measured during manufacturing. Sometimes it may be necessary to make modifications to the structure of As described above, countermeasures against vibration and noise of oil-filled electrical equipment through vibration analysis require a great deal of time and cost.
また、他に油入電気機器の振動騒音対策として、外箱の
板厚を厚くしたり補強板を設けるなどして、外箱を剛く
する方法もあるが、絶縁油は非圧縮性なので、外箱の弱
い部分に動油圧が集中するなどして、外箱内の動油圧は
かえって増加してしまい、この方法では振動低減に限界
があることがわかっている。In addition, there are other ways to prevent vibration and noise from oil-filled electrical equipment by making the outer box more rigid, such as increasing the thickness of the outer box or installing reinforcing plates, but since insulating oil is incompressible, It is known that there is a limit to vibration reduction with this method, as the hydraulic pressure is concentrated in weak parts of the outer box, causing the hydraulic pressure inside the outer box to increase.
そこで、これらの振動騒音対策を改善した別の振動騒音
対策を有する油入電気機器として、従来、第２図に示す
ものが知られている。Therefore, as an oil-immersed electrical equipment having another vibration and noise countermeasure that improves these vibration and noise countermeasures, the one shown in FIG. 2 is conventionally known.
第２図は例えば特公昭３４−６８２６号公報に示された
従来の油入電気機器である変圧器を示す構成図であり、
図において外箱（１）の内部には、巻線（２）と鉄心（
３）とからなる機器本体（４）が収納されているととも
に、機器本体（４）の絶縁と冷却のため絶縁油（５）が
充填されている。外箱（１）の内壁面には、機器本体（
４）の振動が絶縁油（５）を介して外箱（１）に伝達さ
れるのを低減するため、内部に窒素ガス等の気体（６）
が封入され合成ゴム等の可視性材料からなる気体袋（７
）が全周に渡って設けられており、この気体袋（７）は
機器本体（４）に対向する面を金網（８）によって覆わ
れ外箱（１）の内壁面に押さえ付けられている。また、
変圧器の製造途中または現地において、機器本体（４）
を真空乾燥するため、−時外箱（１）の内部は真空状態
にされるが、金網（８）は外箱（１）内の真空時に気体
袋（７）が膨張して破裂してしまうのを防止している。FIG. 2 is a configuration diagram showing a transformer, which is a conventional oil-filled electrical device, as shown in, for example, Japanese Patent Publication No. 34-6826.
In the figure, inside the outer box (1) are a winding (2) and an iron core (
3) is housed therein, and is filled with insulating oil (5) for insulation and cooling of the equipment body (4). The inner wall of the outer box (1) has a main body (
In order to reduce the transmission of the vibrations of 4) to the outer box (1) via the insulating oil (5), a gas such as nitrogen gas (6) is placed inside.
A gas bag (7
) is provided around the entire circumference, and the surface of this gas bag (7) facing the device body (4) is covered with a wire mesh (8) and is pressed against the inner wall surface of the outer box (1). . Also,
During the manufacturing of the transformer or at the site, the equipment itself (4)
In order to vacuum dry the outer box (1), the inside of the outer box (1) is brought into a vacuum state, but the wire mesh (8) expands and ruptures when the outer box (1) is vacuumed. It prevents
上記のように構成された従来の変圧器においては、機器
本体（４）が振動すると、その振動は動油圧として絶縁
油（５）に伝達される。次に、この動油圧は気体袋（７
）に伝達されるが、気体袋（７）では、気体（６）が収
縮することによって動油圧が吸収され、絶縁油（５）か
ら外箱（１）への振動の伝達が低減される。In the conventional transformer configured as described above, when the device main body (4) vibrates, the vibration is transmitted to the insulating oil (5) as hydraulic pressure. Next, this hydraulic pressure is applied to the gas bag (7
), but in the gas bag (7), the hydraulic pressure is absorbed by the contraction of the gas (6), and the transmission of vibration from the insulating oil (5) to the outer box (1) is reduced.
［発明が解決しようとする課題］
上記のように構成された従来の変圧器においては、外箱
（１）内の真空時に、気体袋（７）が膨張破裂する恐れ
があるので、これを防ぐためにかなり強固な金網（８）
が必要であり、また気体袋（７）には大量の気体（６）
が封入されているので、経年劣化などのために気体袋（
７）にごく小さなピンホールが生じただけで、絶縁油（
５）中に気体（６）が大量に放出され、絶縁破壊による
大事故が起きる恐れがあるなどの問題点があった。[Problems to be Solved by the Invention] In the conventional transformer configured as described above, there is a risk that the gas bag (7) will expand and burst when the outer box (1) is under vacuum. A fairly strong wire mesh (8)
A large amount of gas (6) is required in the gas bag (7).
is sealed, so a gas bag (
7) only a small pinhole was formed, and the insulating oil (
5) There were problems such as a large amount of gas (6) being released into the air, which could cause a major accident due to insulation breakdown.
この発明は、上記のような問題点を解決するためになさ
れたもので、従来必要だった金網を省くことができ、そ
れによって全体が軽量化でき、また従来の空気袋も省く
ことができ、それによって絶縁油中への気体の大量放出
による絶縁破壊事故の恐れをなくすこともできる油入電
気機器を得ることを目的とする。This invention was made to solve the above-mentioned problems, and it is possible to omit the conventionally necessary wire mesh, thereby reducing the overall weight, and also to omit the conventional air bag. The object of the present invention is to obtain oil-filled electrical equipment that can eliminate the risk of insulation breakdown accidents caused by large amounts of gas released into insulating oil.
［課題を解決するための手段］
この発明に係る油入電気機器は、振動吸収体を外箱の内
部に設けたものである。[Means for Solving the Problems] An oil-filled electrical device according to the present invention includes a vibration absorber provided inside an outer box.
［作用］
この発明においては、振動吸収体の弾性面が振動を吸収
して、絶縁油から外箱への振動の伝達を低減する。[Function] In the present invention, the elastic surface of the vibration absorber absorbs vibrations and reduces the transmission of vibrations from the insulating oil to the outer box.
［実施例］ 以下、この発明の実施例を図について説明する。[Example] Embodiments of the present invention will be described below with reference to the drawings.
第１図はこの発明の一実施例を示す変圧器の構成図であ
り、第２図と同一または相当部分は同一符号を付し、そ
の説明は省略する。FIG. 1 is a block diagram of a transformer showing an embodiment of the present invention, and the same or corresponding parts as in FIG. 2 are given the same reference numerals, and the explanation thereof will be omitted.
図において、外箱（１）の内壁面には、機器本体（４）
の振動による絶縁油（５）の動油圧が外箱（１）に伝達
されるのを低減するため、強靭で柔軟性および耐油性に
富む合成ゴム等のき成樹脂からなる振動吸収体（９）が
全周に渡って取り付けられている。この振動吸収体（９
）の内部には無数の微小気泡（１０）が均一に封入され
ている。In the figure, the inner wall of the outer box (1) has a device body (4).
In order to reduce the transmission of the hydraulic pressure of the insulating oil (5) to the outer box (1) due to the vibration of the insulating oil (5), a vibration absorber (9 ) are attached around the entire circumference. This vibration absorber (9
) are uniformly filled with countless microbubbles (10).
また、振動吸収体（９）は絶縁油（５）に接する面が弾
性面となっている。Further, the surface of the vibration absorber (9) that comes into contact with the insulating oil (5) is an elastic surface.
上記のように構成された変圧器においては、機器本体（
４）の振動による絶縁油（５）の動油圧が振動吸収体（
９）に伝達されると、振動吸収体（９・）では、無数の
微小気泡（１０）のそれぞれが収縮することによって弾
性面で動油圧が吸収され、絶縁油（５）から外箱（１）
への振動の伝達が低減され、外箱（１）の周囲への振動
および騒音は低減される。In the transformer configured as above, the equipment body (
The dynamic oil pressure of the insulating oil (5) due to the vibration of 4) is applied to the vibration absorber (
When the vibration is transmitted to the vibration absorber (9), each of the countless microbubbles (10) contracts, thereby absorbing the hydraulic pressure on its elastic surface, and the vibration absorber (9) absorbs the hydraulic pressure from the insulating oil (5) to the outer box (1). )
The transmission of vibrations to the outer box (1) is reduced, and the vibrations and noise around the outer box (1) are reduced.
また、振動吸収体（９）は強靭で柔軟性に富んでいるの
で、外箱（１）内が真空状態になっても、形状が一定で
あり、それぞれの微小気泡（１０）が破裂することはな
く、また微小気泡（１０）はそれぞれ独立に設けられて
いるので、経年劣化などによって振動吸収体（９）にピ
ンホールが生じても絶縁油（５）中に大量の気体が放出
することもない。In addition, since the vibration absorber (9) is strong and highly flexible, even if the inside of the outer box (1) is in a vacuum state, its shape remains constant and each micro bubble (10) does not burst. Moreover, since the microbubbles (10) are provided independently, even if a pinhole occurs in the vibration absorber (9) due to aging, etc., a large amount of gas will not be released into the insulating oil (5). Nor.
なお、上記実施例では無数の微小気泡（１０）を有する
振動吸収体（９）を示したが、振動吸収体はこれに限定
されるものではなく、例えば微小気泡（１０）の内部が
真空になっているものなどであってもよく、この渇きは
振動吸収体にピンホールが生じても絶縁油へ気体が放出
されることがない。In addition, although the vibration absorber (9) having countless microbubbles (10) was shown in the above example, the vibration absorber is not limited to this. For example, the inside of the microbubbles (10) is in a vacuum. Even if a pinhole occurs in the vibration absorber, gas will not be released into the insulating oil.
また、微小気泡（１０）が無い振動吸収体であってもよ
い。Moreover, a vibration absorber without microbubbles (10) may be used.
また、上記実施例では油入電気機器として変圧器を示し
たが、例えばリアクトルなど、機器本体が振動する他の
油入電気機器にもこの発明は適用できる。Further, although a transformer is shown as the oil-filled electrical equipment in the above embodiment, the present invention can also be applied to other oil-filled electrical equipment whose main body vibrates, such as a reactor.
［発明の効果］
以上説明したように、この発明の油入電気機器は、弾性
面により振動を吸収するとともに外箱内が真空状態のと
き形状が一定である振動吸収体を外箱の内部に設けたの
で、従来必要だった金網を省くことができ、それによっ
て全体が軽量化でき、また従来の空気袋も省くことがで
き、それによって絶縁油中への気体の大量放出による絶
縁破壊事故の恐れもなくすことができるという効果があ
る。[Effects of the Invention] As explained above, the oil-filled electrical equipment of the present invention includes a vibration absorber inside the outer box that absorbs vibrations with an elastic surface and has a constant shape when the inside of the outer box is in a vacuum state. Because of this, the wire mesh that was previously required can be omitted, which reduces the weight of the whole body.The conventional air bag can also be omitted, thereby reducing the risk of insulation breakdown caused by large amounts of gas being released into the insulating oil. It has the effect of eliminating fear.
第１図はこの発明の一実施例を示す変圧器の構成図、第
２図は従来の変圧器の一例を示す構成図である。
図において、（１）は外箱、（４）は機器本体、（５）
は絶縁油、くっ）は振動吸収体である。
なお、各図中、同一符号は同−又は相当部分を示す。
冒１図
９−振動吸収体FIG. 1 is a block diagram of a transformer showing an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of a conventional transformer. In the figure, (1) is the outer box, (4) is the device body, (5)
is an insulating oil, and a) is a vibration absorber. In each figure, the same reference numerals indicate the same or corresponding parts. Figure 9 - Vibration absorber
Claims (1)
器本体から前記絶縁油を介して伝達された振動を吸収す
る弾性面を有し、かつ前記外箱内が真空状態のとき形状
が一定である振動吸収体を設けたことを特徴とする油入
電気機器。An outer box that houses a device body immersed in insulating oil has an elastic surface that absorbs vibrations transmitted from the device body through the insulating oil, and has a shape when the inside of the outer box is in a vacuum state. Oil-filled electrical equipment characterized by being provided with a vibration absorber whose vibration is constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4458488A JPH01220414A (en) | 1988-02-29 | 1988-02-29 | Oil-filled electric apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4458488A JPH01220414A (en) | 1988-02-29 | 1988-02-29 | Oil-filled electric apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01220414A true JPH01220414A (en) | 1989-09-04 |
Family
ID=12695534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4458488A Pending JPH01220414A (en) | 1988-02-29 | 1988-02-29 | Oil-filled electric apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01220414A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015004737A1 (en) * | 2013-07-09 | 2015-01-15 | 株式会社日立産機システム | Floating offshore wind power generating device and transformer used in same |
-
1988
- 1988-02-29 JP JP4458488A patent/JPH01220414A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015004737A1 (en) * | 2013-07-09 | 2015-01-15 | 株式会社日立産機システム | Floating offshore wind power generating device and transformer used in same |
| CN105264224A (en) * | 2013-07-09 | 2016-01-20 | 株式会社日立产机*** | Floating offshore wind power generating device and transformer used in same |
| JPWO2015004737A1 (en) * | 2013-07-09 | 2017-02-23 | 株式会社日立産機システム | Floating offshore wind turbine generator and transformer used therefor |
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