JPH0630316B2 - Electrical equipment with built-in security device - Google Patents
Electrical equipment with built-in security deviceInfo
- Publication number
- JPH0630316B2 JPH0630316B2 JP61151063A JP15106386A JPH0630316B2 JP H0630316 B2 JPH0630316 B2 JP H0630316B2 JP 61151063 A JP61151063 A JP 61151063A JP 15106386 A JP15106386 A JP 15106386A JP H0630316 B2 JPH0630316 B2 JP H0630316B2
- Authority
- JP
- Japan
- Prior art keywords
- coil spring
- case
- cut
- built
- bellows
- 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.)
- Expired - Lifetime
Links
- 239000004576 sand Substances 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 14
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Telephone Function (AREA)
- Breakers (AREA)
- Insulators (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本考案は内部故障時の発生ガスによるケース内圧の上昇
を利用してリード板部を切断して電流を遮断してなる電
気機器の保安装置の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention is an improvement of a safety device for an electric device in which a lead plate portion is cut off to cut off an electric current by utilizing an increase in internal pressure of a case due to gas generated at the time of internal failure. It is about.
従来の技術 従来、油入コンデンサなどの油入電気機器では、内部故
障が発生すると、故障部の発熱やアークの発生により油
が分解してガスを発生しケース内圧を上昇させ、このま
ま放置するとケースの爆発、噴油にいたり、大きな事故
に進展するおそれがあった。これを防止する一つの方法
として、第２図に示すような保安装置が用いられてい
た。Conventional technology Conventionally, in an oil-filled electrical device such as an oil-filled capacitor, when an internal failure occurs, the oil is decomposed due to heat generation and arcing of the failed part to generate gas, which raises the internal pressure of the case. There was a risk of explosion, oil fog, and a serious accident. As one method of preventing this, a security device as shown in FIG. 2 has been used.
第２図は油入コンデンサの例を示し、１は鋼板などで作
られたケース、２は引出しブッシング、３は内部素体、
４は保安装置であり、５，５′は引出しブッシング２よ
り保安装置４を中継して内部素体３に接続されるリード
線である。Fig. 2 shows an example of an oil-filled capacitor, 1 is a case made of steel plate, 2 is a drawer bushing, 3 is an internal body,
Reference numeral 4 is a security device, and reference numerals 5 and 5'are lead wires connected to the internal element body 3 by relaying the security device 4 from the drawer bushing 2.
第２図(イ)は正常な状態を示すが、内部素体３で故障を
発生すると、発生ガスにより内圧上昇し、ケースが変形
し、第２図(ロ)のようになり、保安装置４のリード板部4
1は切断されて電流は遮断され事故の進展は防止され
る。Although FIG. 2 (a) shows a normal state, when a failure occurs in the internal element body 3, the internal pressure rises due to the generated gas, the case is deformed, and the case becomes as shown in FIG. 2 (b). Lead plate part 4
1 is cut off, the current is cut off, and the progress of the accident is prevented.
発明が解決しようとする問題点 しかしながら、最近では従来の油入コンデンサからＳＦ
６ガス封入などの乾式コンデンサに変遷しつつあり、従
来の保安装置の構造ではガス気体中であるため、再発孤
のない確実な遮断性能が得られない現状である。Problems to be Solved by the Invention However, recently, the conventional oil-filled condenser has been used for SF
It is changing to a dry type condenser such as 6 gas filling, and since the structure of the conventional safety device is in a gas gas, it is the current situation that a reliable blocking performance without recurrence cannot be obtained.
問題点を解決するための手段 本発明はガス気体中であっても確実な遮断性能を得るた
めに改良した保安装置内蔵電気機器に関するものであ
る。すなわち、本発明の保安装置内蔵電気機器は、引出
しブッシングを備えたケースの一部にベローズを設け、
該ケースに電気機器素子と保安装置を収納し、ＳＦ６な
どのガスを封入したもので、上記保安装置は電極板と、
該電極板間を橋絡する薄板リード板と、該電極板と薄板
リード板を埋設する珪砂などの消孤砂と、上記電極板に
接続されたコイルバネ軸芯およびコイルバネと、ベロー
ズに支持され上記コイルバネ軸芯に挿通したコイルバネ
止留ピンと、これら全体を被覆する樹脂とから構成され
たものである。The present invention relates to an electric device with a built-in safety device which is improved in order to obtain a reliable breaking performance even in a gas. That is, the electric device with a built-in security device of the present invention is provided with a bellows in a part of a case provided with a drawer bushing,
An electric device element and a safety device are housed in the case, and a gas such as SF 6 is sealed therein. The safety device is an electrode plate,
A thin lead plate bridging between the electrode plates, an eraser sand such as silica sand for embedding the electrode plate and the thin lead plate, a coil spring shaft core and a coil spring connected to the electrode plate, and a bellows supported by the above. The coil spring retaining pin is inserted through the coil spring shaft core, and a resin that covers the entire coil spring retaining pin.
作用 電気機器素子の故障によりガスが発生してケースがほと
んど変形しない範囲で内圧が上昇して所定の圧力に達す
ると、ケース内に設けたベローズの変位によって、該ベ
ローズに支持されたコイルバネ止留ピンが外れ、コイル
バネの復元力によって瞬時的に薄板リード板が機械的に
切断し、該切断時に発生するアークを珪砂などの消孤砂
で遮断する。Action When the internal pressure rises and reaches a predetermined pressure within the range where the gas is generated due to a failure of an electric device element and the case is hardly deformed, the displacement of the bellows provided in the case causes the coil spring retaining element supported by the bellows. The pin is disengaged, and the thin lead plate is mechanically cut instantaneously by the restoring force of the coil spring, and the arc generated at the time of the cutting is interrupted by the silting sand such as silica sand.
実施例 以下、本発明を第１図に示す一実施例について説明す
る。EXAMPLE An example of the present invention shown in FIG. 1 will be described below.
11は引出しブッシング12Ａ、12Ｂを備えたケース、13は
ケース11に収納された例えばコンデンサ素子などの電気
機器素子、14は電気機器素子13を固定する素子固定部
材、15は上記ケース11の一部に設けたベローズ、16はベ
ローズ15の上面に下方に向けて固着したコイルバネ止留
ピン、17はベローズ15の上面に配置したベローズ変位調
整バネ、18はベローズ16を保護するための保護カバー、
19は電気機器素子13の上方に位置し、ケース11に固着さ
れた保安装置である。この保安装置は電極板20、21と、
該電極板20、21間を橋絡する薄板リード板22と、該電極
板20、21と薄板リード板22を埋設する珪砂などの消孤砂2
3と、上記電極板21と接続するコイルバネ軸芯24および
該コイルバネ軸芯24の一部を周回したコイルバネ25と、
これら全体を被覆する樹脂26とから構成されている。27
は樹脂26に設けた通気孔である。Reference numeral 11 is a case having drawer bushings 12A and 12B, 13 is an electric device element such as a capacitor element housed in the case 11, 14 is an element fixing member for fixing the electric device element 13, and 15 is a part of the case 11 described above. , 16 is a coil spring retaining pin fixed to the upper surface of the bellows 15 downward, 17 is a bellows displacement adjusting spring arranged on the upper surface of the bellows 15, 18 is a protective cover for protecting the bellows 16,
Reference numeral 19 is a security device which is located above the electric device element 13 and fixed to the case 11. This security device includes electrode plates 20 and 21,
A thin lead plate 22 bridging between the electrode plates 20 and 21, and a disappearing sand 2 such as silica sand in which the electrode plates 20 and 21 and the thin plate lead plate 22 are embedded.
3, a coil spring shaft core 24 connected to the electrode plate 21 and a coil spring 25 around a part of the coil spring shaft core 24,
It is composed of a resin 26 that covers all of them. 27
Is a vent provided in the resin 26.
そして28は電気機器素子13と引出しブッシング12Ａを接
続する被覆リード線、29は電気機器素子13と保安装置19
のコイルバネ軸芯24を接続する被覆リード線、30は保安
装置19の電極板20と引出しブッシング12を接続する被覆
リード線、31はケース11に充填封入されたＳＦ６などの
ガスである。28 is a covered lead wire for connecting the electric device element 13 and the drawer bushing 12A, and 29 is the electric device element 13 and the safety device 19
Is a coated lead wire for connecting the coil spring shaft core 24, 30 is a coated lead wire for connecting the electrode plate 20 of the safety device 19 and the drawer bushing 12, and 31 is a gas such as SF 6 filled and sealed in the case 11.
第１図に示す本発明の保安装置内蔵電気機器において、
電気機器素子13の故障により分解ガスが発生してケース
11がほとんど変形しない範囲で内圧が上昇すると、ベロ
ーズ変位調整バネ17の復元力に打ち勝って、ベローズ15
が徐々に脹れあがると同時にコイルバネ止留ピン16も上
昇し、所定の、圧力に達すると、ベローズ15に固着した
コイルバネ止留ピン16の先端がコイルバネ軸芯24より外
れコイルバネ25のバネ力によってコイルバネ軸芯24が右
方に引っ張られるので、瞬時時に薄板リード板22が切断
し、そのとき発生するアークは消孤砂23によって消孤さ
れ、電気機器は電気回路より遮断される。そして切断さ
れた薄板リード板22間のクリアランスはコイルバネ軸芯
25と樹脂26の間のクリアランスＡで充分確保され、再接
触を生じる心配はない。In the electric device with a built-in security device of the present invention shown in FIG.
Case where decomposed gas is generated due to failure of electric device element 13
When the internal pressure rises in the range where 11 is hardly deformed, the restoring force of the bellows displacement adjustment spring 17 is overcome and the bellows 15
The coil spring retaining pin 16 also rises at the same time as the coil spring rises, and when a predetermined pressure is reached, the tip of the coil spring retaining pin 16 fixed to the bellows 15 is disengaged from the coil spring axis 24 by the spring force of the coil spring 25. Since the coil spring axis 24 is pulled to the right, the thin lead plate 22 is instantaneously cut, and the arc generated at that time is extinguished by the extinguishing sand 23, and the electric device is cut off from the electric circuit. The clearance between the cut thin lead plates 22 is the coil spring axis.
The clearance A between the resin 25 and the resin 26 is sufficiently secured, and there is no risk of re-contact.
なお、保安装置19の内部空隙部と電気機器ケース内は通
気孔27を通じて同一の状態に保たれている。The internal void portion of the security device 19 and the inside of the electric device case are kept in the same state through the ventilation hole 27.
上述の実施例ではベローズとベローズ変位調整バネを用
いたが、これの代わりに薄板反転板を用い、所定の圧力
に達すると薄板反転板が反転し、該薄板反転板に取付け
られたコイルバネ止留ピンの先端がコイルバネ軸芯より
外れ、コイルバネの復元力によってコイルバネ軸芯が右
方に引張られて、瞬間的に薄板リード板が切断し、電気
機器を電気回路より遮断することができる。またその他
のものについても基本的構成が同じであれば、本発明に
包含されることはもちろんである。Although the bellows and the bellows displacement adjusting spring are used in the above-described embodiment, a thin plate reversing plate is used instead of the bellows, and the thin plate reversing plate is reversed when a predetermined pressure is reached, and the coil spring retaining plate attached to the thin plate reversing plate is used. The tip of the pin deviates from the coil spring axis, and the coil spring axis is pulled to the right by the restoring force of the coil spring, the thin lead plate is momentarily cut, and the electric device can be cut off from the electric circuit. In addition, it is needless to say that the other components are included in the present invention as long as they have the same basic configuration.
発明の効果 叙上のように本発明の保安装置内蔵電気機器は、保安装
置の動作圧力をベローズ変位調整バネにより調整設定ま
たは薄板反転板の厚さ、大きさなどを調整設置すること
ができ、切断された薄板リード板間のクリアランスの確
保と消孤砂中でのアーク遮断が確実に行われるため、高
信頼性で、かつ動作性能が優れた効果を奏し、工業的な
らびに実用的価値大である。As described above, the electric device with a built-in safety device of the present invention can adjust and set the operating pressure of the safety device by the bellows displacement adjusting spring or the thickness and size of the thin plate reversing plate, and the like. Since the clearance between the cut thin lead plates is secured and the arc is cut off in the sand, it is highly reliable and has excellent operating performance, and has great industrial and practical value. is there.
第１図は本発明の保安装置内蔵電気機器の説明用断面
図、第２図は従来の油入電気機器の保安装置の動作原理
を示す説明図で、(イ)は正常時、(ロ)は動作後の場合を示
す。 11：ケース、13：電気機器素子、15：ベローズ 16：コイルバネ止留ピン 17：ベローズ変位調整バネ、19：保安装置 22：薄板リード板、23：消孤砂 24：コイルバネ軸芯、25：コイルバネ 26：樹脂、31：ガスFIG. 1 is a cross-sectional view for explaining an electric device with a built-in safety device of the present invention, and FIG. 2 is an explanatory view showing the operating principle of a conventional safety device for an oil-filled electric device, in which (a) is normal, (b) Indicates the case after the operation. 11: Case, 13: Electric device element, 15: Bellows 16: Coil spring retaining pin 17: Bellows displacement adjusting spring, 19: Security device 22: Thin lead plate, 23: Sand sand 24: Coil spring shaft core, 25: Coil spring 26: Resin, 31: Gas
Claims (1)
上昇を利用し、リード板を切断して電流を遮断してなる
保安装置内蔵電気機器において、ケースに電気機器素子
を収納してガスを充填し、内圧上昇によりケースの一部
に取付けたベローズまたは反転板が変位し、消孤砂中に
埋没した上記リード板を機械的に切断する保安装置に設
けたコイルバネ止留ピンを外し、上記リード板をコイル
バネの復元力により機械的に切断することを特徴とする
保安装置内蔵電気機器。Claim: What is claimed is: 1. An electric device with a built-in safety device, wherein a lead plate is cut to cut off an electric current by utilizing an increase in case internal pressure due to gas generated at the time of internal failure, and an electric device element is housed in the case to supply gas. The bellows or the reversal plate attached to a part of the case is displaced due to the increase of the internal pressure, and the coil spring retaining pin provided in the safety device for mechanically cutting the lead plate buried in the sand is removed. Electrical equipment with a built-in safety device, characterized in that the lead plate is mechanically cut by the restoring force of the coil spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61151063A JPH0630316B2 (en) | 1986-06-26 | 1986-06-26 | Electrical equipment with built-in security device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61151063A JPH0630316B2 (en) | 1986-06-26 | 1986-06-26 | Electrical equipment with built-in security device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS636826A JPS636826A (en) | 1988-01-12 |
| JPH0630316B2 true JPH0630316B2 (en) | 1994-04-20 |
Family
ID=15510491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61151063A Expired - Lifetime JPH0630316B2 (en) | 1986-06-26 | 1986-06-26 | Electrical equipment with built-in security device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0630316B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111105930B (en) * | 2019-12-31 | 2024-12-31 | 安徽铜峰电子股份有限公司 | A safe explosion-proof capacitor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49126535U (en) * | 1973-03-01 | 1974-10-30 |
-
1986
- 1986-06-26 JP JP61151063A patent/JPH0630316B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS636826A (en) | 1988-01-12 |
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