JPH01213925A - Power breaker - Google Patents

Power breaker

Info

Publication number
JPH01213925A
JPH01213925A JP4004788A JP4004788A JPH01213925A JP H01213925 A JPH01213925 A JP H01213925A JP 4004788 A JP4004788 A JP 4004788A JP 4004788 A JP4004788 A JP 4004788A JP H01213925 A JPH01213925 A JP H01213925A
Authority
JP
Japan
Prior art keywords
capacitor
damper
spring
circuit breaker
viscous friction
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
Application number
JP4004788A
Other languages
Japanese (ja)
Inventor
Setsuyuki Matsuda
松田 節之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP4004788A priority Critical patent/JPH01213925A/en
Publication of JPH01213925A publication Critical patent/JPH01213925A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To enhance the anti-seismic characteristic by mounting an attachment to a shutoff part using a spring and a damper of viscous friction type. CONSTITUTION:Attachment such as capacitor 5 is mounted to a shutoff part 1 parallelly by a spring and a damper of viscous friction type 10. According to this constitution, seismic vibration of the shutoff part 1, etc., in the upper part of a supporting insulation 2 is converted into vibration of the attachment such as capacitor 5, and its energy is absorbed by viscous friction of the damper 10 to relieve the force or a bending moment applied to the support insulation 2. Thus a shutoff part for electric power excellent in anti-seismic performance is obtained.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は電力用遮断器の耐震性能を向上させるための
構造に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a structure for improving the seismic performance of a power circuit breaker.

〔従来の技術〕[Conventional technology]

第6図は、例えば三菱電機技報第54巻9号(1980
) 、第65頁9図12の写真に示される遮断器の構造
を図示したものである。図中(1]は遮断部であり、碍
管の内部に電流を開閉する接触子とそれを動作する連結
機構が収められている。(2)は支持絶縁物であり、碍
管で作られ、支持構造物(3)に固定されている。(4
)は操作機構であり、支持絶縁物(2)中の絶縁棒を介
して遮断部(1)の連結機構と結ハしている。(5)は
コンデンサであり、遮断部(1]。
Figure 6 shows, for example, Mitsubishi Electric Technical Report Vol. 54, No. 9 (1980
), page 65, 9 illustrates the structure of the circuit breaker shown in the photograph of FIG. 12. In the figure, (1) is the cut-off part, and the contactor that switches on and off the current and the connecting mechanism that operates it are housed inside the insulator tube. (2) is the support insulator, which is made of insulator tube and It is fixed to the structure (3). (4
) is an operating mechanism, which is connected to the connecting mechanism of the interrupting part (1) via an insulating rod in the support insulator (2). (5) is a capacitor and is a cut-off part (1).

に並列に取付金具(61(7)により接続されている。It is connected in parallel with the mounting bracket (61 (7)).

(8)は端子であり、この間に2つの遮断部(1)が直
列に接続され、遮断部(1]が閉じると電流がこれらを
流れる。一方、遮断部(1)が開いた場合には、2つの
遮断部(1]で電圧を分担して耐えるが、コンデンサ(
5)の容量がかなり大きいので、各遮断部(1)の電圧
分担の均一化に役立つ。又、コンデンサ+11は遮断性
能の向上のためにも効果が大きく、最近の大きな遮断1
力を要求される遮断器では相当大形の重量の大きなもの
も用いられるようになっている。
(8) is a terminal, between which two cut-off parts (1) are connected in series, and when the cut-off part (1) is closed, current flows through them.On the other hand, when the cut-off part (1) is opened, , the voltage is shared and withstood by the two cutoff parts (1), but the capacitor (
Since the capacitance of 5) is quite large, it helps to equalize the voltage distribution of each interrupting section (1). In addition, the capacitor +11 has a great effect on improving the breaking performance, and the recent large breaking 1
Circuit breakers that require a lot of force are now being used in circuit breakers that are quite large and heavy.

(9)は電界緩和用のシールドリングである。(9) is a shield ring for electric field relaxation.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

このような遮断器において、高電圧の場合支持絶縁物が
長くなり、大電流用遮断器では遮断部の重量も大きくな
るので、地震による振動が加わった場合、支持絶縁物に
は大きな曲げモーメントが働くため、支持絶縁物には大
径の高価な碍管を必要とする。さらに、補強用の碍子を
設けるなどの対策を要し、対策不十分の場合には地震に
よる遮断器の倒壊事故も生じている。
In such circuit breakers, the supporting insulators are long for high voltages, and the weight of the breaking section is also large for high-current circuit breakers, so when vibrations from an earthquake are applied, the supporting insulators are subject to a large bending moment. In order to function, the supporting insulation requires large diameter and expensive porcelain tubing. Furthermore, countermeasures such as the installation of reinforcing insulators are required, and if these measures are insufficient, accidents may occur in which circuit breakers collapse due to earthquakes.

この発明は、上記のような課題を解消するためなされた
もので、地震の場合に、支持絶縁物に働く曲げモーメン
トや力を軽減し、耐震性に秀れた電力用遮断器を提供す
ることを目的としている。
This invention was made to solve the above-mentioned problems, and an object of the present invention is to provide a power circuit breaker that reduces the bending moment and force acting on supporting insulators in the event of an earthquake and has excellent earthquake resistance. It is an object.

〔課題を解決するための手段〕[Means to solve the problem]

この発明に係る電力用遮断器は、遮断部に並列に設置す
るコンデンサなどの付属品を、ばねと粘性摩擦式ダンパ
ーにより取りつけるようにしたものである。
In the power circuit breaker according to the present invention, accessories such as a capacitor installed in parallel to the circuit breaker are attached using a spring and a viscous friction damper.

〔作 用〕[For production]

この発明における電力用遮断器は、地震による支持絶縁
物の上部の遮断部などの振動をコンデンサなどの付属品
の振動に転じ、ダンパーの粘性摩擦によりそのエネルギ
ーを吸収し、支持絶縁物に働く地震によるストレスを軽
減する。
The power circuit breaker of this invention converts the vibration of the upper interrupting part of the supporting insulator caused by an earthquake into the vibration of accessories such as a capacitor, and absorbs the energy by the viscous friction of the damper. Reduce stress caused by

〔発明の実施例〕[Embodiments of the invention]

以下、この発明の一実施例を図について説明する。第1
図において、(1)〜(5)は従来のものと同様である
。 +61+7)は取付金具で、シールドリングの役を
兼ねている。さらに、取付金具t6+ F71には、ば
ね付ダンパーO1が取付けられ、これを介してコンデン
サ(5]が支えられている。第2図、第3図はばね付ダ
ンパーαCの近傍の一部断面図を、夫々、コンデンサ(
5)の軸直角方向と軸方向から見て示したものである。
An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, (1) to (5) are the same as the conventional one. +61+7) is a mounting bracket that also serves as a shield ring. Furthermore, a spring-loaded damper O1 is attached to the mounting bracket t6+F71, and the capacitor (5) is supported via this. Figures 2 and 3 are partial cross-sectional views of the vicinity of the spring-loaded damper αC. , respectively, the capacitor (
5) as seen from the axis-perpendicular direction and the axial direction.

Uυはシリンダー、t13はピストン、Uはピストンロ
ッドで、取付金具(7)に固定される。圓はばねであり
、これはシリンダ外に別に置いてもよい、α9は紋りで
あり、0eで示す粘性物質が摩擦を生いながら通過する
孔である。ばね付ダンパーa〔は水平面内でコンデンサ
(5)の軸方向と軸直角方向に向いたシリンダー圓が組
になって設けられている。αηはコンデンサ(5)を取
付金具(7)に電気的に接続する可撓性のある接続線で
あり、取付金具(6)に対しても同様にコンデンサ(5
)の他端に接続線が設けられている。(図示されていな
い。)このような構造の遮断器において、遮断や通rg
は前述の従来のものと同様に行なわれるが、地震力が加
わった場合次のように働く。
Uυ is a cylinder, t13 is a piston, and U is a piston rod, which is fixed to the mounting bracket (7). The circle is a spring, which may be placed separately outside the cylinder, α9 is a ridge, and Oe is a hole through which a viscous substance passes while producing friction. The spring-equipped damper a is provided with a set of cylinder circles that are oriented perpendicular to the axial direction of the capacitor (5) in a horizontal plane. αη is a flexible connection wire that electrically connects the capacitor (5) to the mounting bracket (7), and similarly connects the capacitor (5) to the mounting bracket (6).
) is provided with a connecting line at the other end. (Not shown) In a circuit breaker with this structure,
is performed in the same way as the conventional method described above, but when an earthquake force is applied, it works as follows.

地震力が支持構造物(3)に加わると、支持絶縁物(2
)、遮断部(1)、コンデンサ(5)へと伝わり各部が
振動を始める。この時、コンデンサ(5)の取付部のば
ね定数とダンパーの粘性摩擦減衰を適当に選べば、コン
デンサ(5)の振動に地震によるエネルギの大部分が注
入され、しかもダンパーの粘性摩擦減衰によりこのエネ
ルギーの多くが消費されるため、支持絶縁物(2)に加
わるストレス即ち曲げモーメントは非常に小さくなる。
When an earthquake force is applied to the supporting structure (3), the supporting insulator (2)
), the interrupter (1), and the capacitor (5), and each part begins to vibrate. At this time, if the spring constant of the mounting part of the capacitor (5) and the viscous friction damping of the damper are selected appropriately, most of the energy from the earthquake will be injected into the vibration of the capacitor (5), and moreover, the viscous friction damping of the damper will inject this energy. Since much of the energy is dissipated, the stress or bending moment on the supporting insulation (2) is very small.

耐震強度上、遮断器で最も弱点となる支持絶縁物(2)
を小形化しても十分な耐震強度が得られるため、経済的
効果は大きい。
Support insulators are the weakest point in circuit breakers in terms of seismic strength (2)
Even if it is made smaller, sufficient seismic strength can be obtained, so the economic effect is large.

コンデンサなどの付属品を取付けるばねのばね定数は、
この部分の固有振動数(fd)が、遮断部の固有振動数
(りに対し、次の比率になるようにすればよいことが機
械力学により分る。即ち、コンデンサ部の質量をMd、
  その他の遮断部など本体1+にである。
The spring constant of the spring for attaching accessories such as capacitors is
Mechanical mechanics shows that the natural frequency (fd) of this part should be in the following ratio to the natural frequency (ri) of the cutoff part.In other words, the mass of the capacitor part is Md,
Other cut-off parts and the like are in the main body 1+.

ここで、遮断部など本体の質31Mは、質量M3の片持
梁の支持絶縁物の上端に、質量M1の遮断部が搭載され
た構造と考え、 M=M1+□40”で近似してもよいと考える。又、ダ
ンパーの減衰Cは、限界減衰Ccに対する比率が(1)
式になるように選ぶのが最も良い。
Here, the quality 31M of the main body such as the interrupting part can be approximated by M=M1+□40", assuming that the interrupting part with mass M1 is mounted on the upper end of the support insulator of the cantilever beam with mass M3. Also, the damper damping C has a ratio of (1) to the limit damping Cc.
It is best to choose one that follows the formula.

第4図は、減衰Cを変化させた場合の振動の様相を、絶
縁支持体の下端のストレス、ここでは曲げモーメントで
表したものである。点線α印で示す関係はC=■即ち、
コンデンサがばねもなく剛に取付けられた場合を、−点
鎖線α湯の関係はC=0即ちばねのみでダンパーがなく
減衰のない場合を示シ、いずれもストレスの太き(なる
共振点が存在する。一方、実線■の関係はばねとダンノ
(−の減衰を(1)式のように選定した場合を示し最も
大きくなるストレスが非常に小さくなる。
FIG. 4 shows the state of vibration when the damping C is changed, expressed in terms of the stress at the lower end of the insulating support, in this case the bending moment. The relationship indicated by the dotted line α is C=■, that is,
When the capacitor is rigidly mounted without a spring, the relationship between -dotted and dashed line α shows the case where C=0, that is, there is only a spring and no damper, and there is no damping. On the other hand, the relationship indicated by the solid line (■) indicates the case where the damping of the spring and Dunno (-) is selected as shown in equation (1), and the maximum stress becomes extremely small.

上記の実施列では、ばね付活性ダンパーとしてばねと粘
性流体を入れたシリンダとピストンによる構造を示した
が、第5図に示すように、ばねと粘性減衰を兼ね備えた
、充填材入りのゴムよりなる1、いわゆる防振ゴム圓を
用いることも゛できる。
In the above example, the structure of the spring-equipped active damper is made up of a cylinder and piston filled with a spring and viscous fluid, but as shown in Fig. It is also possible to use a so-called anti-vibration rubber ring.

図示のように金具■の間にゴムを挾んで一体化した構造
の最も単純な構造の防振ゴムによる取付は列できる。
As shown in the figure, the simplest structure of vibration isolating rubber can be installed by sandwiching the rubber between the metal fittings (2) and integrating the structure.

なお、遮断部(1)に設けられる付属品としてはコンデ
ンサの他、遮断性能向上や投入時のサージ抑制用の抵抗
体やシールドリングなどが利用できることもあり、これ
らをばねとダンパーで取付けてもよい。又、上記の実施
例は、碍子形遮断器に対する例を述べたが、同様の構造
で、遮断部やコンデンサが短い支持絶縁物でタンク中に
支えられたタンク形遮断器に対しても、適用することが
できる。又、一つの遮断部(1)が垂直に設けられた1
点切遮断器に対しても、ばね付ダンパーの移動可能面が
水平となるよう取付けることにより適用することができ
る。
In addition to capacitors, resistors and shield rings can be used to improve the interrupting performance and suppress surges during power-on as accessories installed on the interrupter (1). good. Furthermore, although the above embodiments are for insulator-type circuit breakers, they can also be applied to tank-type circuit breakers with a similar structure in which the interrupting part and capacitor are supported in the tank by short support insulators. can do. Moreover, one blocking part (1) is provided vertically.
It can also be applied to a break-out circuit breaker by installing the spring-equipped damper so that its movable surface is horizontal.

〔発明の効果〕〔Effect of the invention〕

以上のように、この発明によれば、遮断部に並列に設置
されるコンデンサなどの付属物をばね付粘性李擦式ダン
パーを介して取付けることにより、耐震性に秀れたフカ
用遮断器を得ることができる。
As described above, according to the present invention, by attaching accessories such as a capacitor installed in parallel to the interrupting part via a spring-equipped viscous friction damper, a hook-up circuit breaker with excellent earthquake resistance can be obtained. Obtainable.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の一実施例を示す遮断器の構造図であ
る。第2図、第3図は第1図のうちコンデンサの取付部
の構造を示す一部断面図である。 第4図は遮断器の振動特性の例を示す説明図である。第
5図は本発明の他の実施例として防振ゴムを適用した例
を示す構造図、第6図は従来の遮断器の構造図を示す。 図において、(1)は遮断部、(2)は支持絶縁物、(
5)はコンデンサ(付属品)、0旧よばね付ダンパー(
粘性摩擦式ダンパー)である。 なお、各図中同一符号は同−又は相当部分を示す。 代 理 人   大  岩  増  雄第5図 、5 Z〜1111 第6図
FIG. 1 is a structural diagram of a circuit breaker showing an embodiment of the present invention. 2 and 3 are partial cross-sectional views showing the structure of the capacitor mounting portion in FIG. 1. FIG. FIG. 4 is an explanatory diagram showing an example of vibration characteristics of a circuit breaker. FIG. 5 is a structural diagram showing an example in which vibration isolating rubber is applied as another embodiment of the present invention, and FIG. 6 is a structural diagram of a conventional circuit breaker. In the figure, (1) is the interrupting part, (2) is the support insulator, (
5) is a capacitor (accessory), a spring-loaded damper (
This is a viscous friction damper). Note that the same reference numerals in each figure indicate the same or corresponding parts. Agent Masuo Oiwa Figure 5, 5 Z~1111 Figure 6

Claims (1)

【特許請求の範囲】[Claims] (1)大電流を遮断・投入する遮断部を支持絶縁物によ
り大地電位部から絶縁支持した構造の電力用遮断器にお
いて、上記遮断部に設けられる付属品をばねと粘性摩擦
式ダンパーとにより取り付けたことを特徴とする電力用
遮断器。
(1) In a power circuit breaker that has a structure in which the interrupting section that cuts off and supplies large currents is insulated and supported from the ground potential section by a supporting insulator, the accessories installed on the interrupting section are attached using springs and viscous friction dampers. A power circuit breaker characterized by:
JP4004788A 1988-02-23 1988-02-23 Power breaker Pending JPH01213925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4004788A JPH01213925A (en) 1988-02-23 1988-02-23 Power breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4004788A JPH01213925A (en) 1988-02-23 1988-02-23 Power breaker

Publications (1)

Publication Number Publication Date
JPH01213925A true JPH01213925A (en) 1989-08-28

Family

ID=12570001

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4004788A Pending JPH01213925A (en) 1988-02-23 1988-02-23 Power breaker

Country Status (1)

Country Link
JP (1) JPH01213925A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50140864A (en) * 1974-04-02 1975-11-12
JPS5916232A (en) * 1982-07-20 1984-01-27 株式会社東芝 Breaker

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50140864A (en) * 1974-04-02 1975-11-12
JPS5916232A (en) * 1982-07-20 1984-01-27 株式会社東芝 Breaker

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