JPH01231229A - Sealed type switch - Google Patents
Sealed type switchInfo
- Publication number
- JPH01231229A JPH01231229A JP5701588A JP5701588A JPH01231229A JP H01231229 A JPH01231229 A JP H01231229A JP 5701588 A JP5701588 A JP 5701588A JP 5701588 A JP5701588 A JP 5701588A JP H01231229 A JPH01231229 A JP H01231229A
- Authority
- JP
- Japan
- Prior art keywords
- pressure relief
- shortcircuit
- shorting
- phases
- relief valve
- 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.)
- Granted
Links
- 239000004020 conductor Substances 0.000 claims abstract description 10
- 238000004880 explosion Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
- H01H33/56—Gas reservoirs
- H01H2033/568—Gas reservoirs with overpressure release, e.g. rupture membranes
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は開閉器内でのアーク短絡発生時にアークエネ
ルギーを減少させるため、アーク短絡の内圧を利用し、
放圧弁の開放と共に短絡バーを短絡させる機構を有する
密閉型開閉器に関するものである。[Detailed Description of the Invention] (Industrial Application Field) This invention utilizes the internal pressure of the arc short circuit in order to reduce arc energy when an arc short circuit occurs in a switch.
The present invention relates to a closed-type switch having a mechanism for short-circuiting a short-circuit bar when a pressure relief valve is opened.
（従来の技術）
空気又は絶縁ガス等を絶縁及び消弧媒体とする密閉式高
圧開閉器は内部で短絡事故が発生した場合、この短絡事
故により開閉器内の圧力が上昇し、開閉器を変形して外
部に高温ガスを放出するか、爆発する。(Prior art) When a short circuit occurs inside a closed high-voltage switch that uses air or insulating gas as an insulating and arc-extinguishing medium, the pressure inside the switch increases due to the short circuit, causing the switch to become deformed. and release hot gas to the outside or explode.
そこで予め開閉器の側壁に放圧弁等を設け、内部圧力の
上昇に伴い、放圧弁を変形又は動作させて開閉器の密閉
を破り、該箇所から放圧させ、開閉器の変形や爆発を防
いでいる。Therefore, a pressure relief valve, etc. is installed in advance on the side wall of the switch, and as the internal pressure rises, the pressure relief valve deforms or operates to break the seal of the switch and release the pressure from that point, thereby preventing the switch from deforming or exploding. I'm here.
（発明が解決しようとする課題）
しかしながら放圧弁は常時は密閉せしめていなければな
らず、かつ開閉器のスペースの関係もあり、その大きさ
はある程度限られる。しかも開閉器は内部短絡事故が発
生した場合、その開閉器の電源側のしゃ断器がしゃ断す
るまで短絡アークが持続する。そのため相当量の高温ガ
スが発生し、開閉器を損傷するおそれがあり、かつ開閉
器外に放出する高温ガスにより通行人等が被害を蒙るお
それがある。(Problems to be Solved by the Invention) However, the pressure relief valve must be kept sealed at all times, and its size is limited to some extent due to the space available for the switch. Furthermore, when an internal short circuit occurs in a switch, the short circuit arc continues until the circuit breaker on the power supply side of the switch is disconnected. Therefore, a considerable amount of high-temperature gas is generated, which may damage the switch, and passersby may be harmed by the high-temperature gas released outside the switch.
そこでこの発明はこの様な内部短絡４１１故の際発生す
る短絡アークのアークエネルギーを減少させて、高温ガ
スの長期発生による機器の損傷や通行人等への危害を未
然に防ぐ開閉器を提供すること＊ ｌ：ｌ的としたもの
である。Therefore, the present invention provides a switch that reduces the arc energy of the short circuit arc that occurs when such an internal short circuit 411 occurs, and prevents damage to equipment and harm to passersby due to long-term generation of high-temperature gas. * l: This is something that is said to be l-like.
（課題を解決するための手段）
そこでこの発明は一定値以上の内部圧力によって放圧１
」を開放する常閉型の放圧弁を備えた密閉型の開閉器内
において、電源側及び負荷側の三相各相の電極に通じる
導体から夫々短絡接点片を設け、電源側の三相の短絡接
点片と接触自在な一方の短絡バーと、負荷側の三相の短
絡接点片と接触自在な他方の短絡バーとを設け、これら
の短絡バーは上記放圧弁と連動する構成としたものであ
る。(Means for Solving the Problems) Therefore, the present invention provides pressure relief 1 by using an internal pressure of a certain value or more.
In a sealed switch equipped with a normally closed pressure relief valve that opens the One shorting bar that can freely contact the shorting contact piece and the other shorting bar that can freely come into contact with the three-phase shorting contact piece on the load side are provided, and these shorting bars are configured to interlock with the pressure relief valve. be.
また上記放圧弁は弾機により放圧１」を密閉するよう付
勢され、開閉器内の内部圧力が一定値以上になった際、
上記弾機に抗して放圧口が開放され、また開閉器内部の
圧力が一定値未満に降−１・することによって」二記弾
機の力によって放圧弁が放圧１−１を閉しる際、この放
圧弁に連動して上記各短絡バーが各短絡接点片から離れ
る構成とすることもできる。In addition, the above-mentioned pressure relief valve is energized by a bullet to seal the relief pressure 1, and when the internal pressure in the switch exceeds a certain value,
The pressure relief port is opened against the above-mentioned bullet, and when the pressure inside the switch drops below a certain value, the pressure relief valve closes the pressure relief port 1-1 by the force of the bullet. In this case, each shorting bar may be separated from each shorting contact piece in conjunction with this pressure relief valve.
さらにまた上記各短絡バーが電源側の三相の短絡接点片
又は負荷側の三相の短絡接点片と接触すると、これをロ
ックするロック機構を設けることもできる。Furthermore, a locking mechanism may be provided that locks each shorting bar when it comes into contact with a three-phase shorting contact piece on the power supply side or a three-phase shorting contact piece on the load side.
（作 用）
この開閉器内で短絡事故が発生し、アークが発生すると
、開閉器内の圧力が上昇する。この内部圧力が一定値以
上に上昇すると放圧弁が放圧口を開放し、この放圧口か
ら高温ガスが開閉器外方へ放出される。この放圧弁の移
」す」とともに短絡バーが動き、電源側の三相の各短絡
接点片又は負荷側の三相の短ｍ接点片と各短絡バーとが
接触する。(Function) When a short circuit occurs in this switch and an arc occurs, the pressure inside the switch increases. When this internal pressure rises above a certain value, the pressure relief valve opens the pressure relief port, and high-temperature gas is released from the pressure relief port to the outside of the switch. As the pressure relief valve moves, the short-circuiting bar moves, and each short-circuiting bar comes into contact with each of the three-phase short-circuiting contact pieces on the power supply side or with the three-phase short-circuiting contact pieces on the load side.
これによりアーク短絡から金属短絡へと移行するためア
ークが消滅する。This causes a transition from an arc short circuit to a metal short circuit, and the arc disappears.
（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.
密閉型の開閉器本体ｌの一側壁に電源側及び負荷側夫々
に三相のブッシング２．２′が設けられ、これらの各ブ
ッシング２又は２′の、開閉器本体ｌ外方には、ケーブ
ル接続端子３．３′が夫々接続され、また開閉器本体ｌ
の内方の各ブッシング２又は２′には導体４が夫々接続
されている。電源側と負荷側との相応する三相各相の導
体４．４′は開閉器本体ｌ内の開閉接点機構部５に導か
れ、この開閉接点機構部５内で接触、離脱自在となって
いる。また−」二記電源側のブッシング２と負荷側のブ
ッシング２′との間の開閉器本体１の一側壁には放圧口
６が設けられ、この放圧１」６には外周縁６ａが設けら
れ、かつこの放圧口６は格子板７が被っている。またこ
の格子板７の中央には孔を有し、この孔に作動杆８が摺
動自在に透通している。開閉器本体１の外方に突出した
作動杆８の外端には放圧弁９が固定され、この放圧弁９
は上記放圧口６の外周９６ａの周縁に当接し、放圧口６
を閉口自在である。また作動杆８の開閉器本体ｌ内に位
置する作動杆８の内端には作動板ＩＯが固定されている
。この作動板１０と上記格子板７との間の作動杆８外周
にスプリングバネ１１が設けられ、このスプリングバネ
１１の付勢により放圧弁９は常時放圧１」６の外周縁６
ａを押圧して放圧口６を塞いでいる。上記作動板１０の
両側には短絡バー１２．１２’ を設け、上記電源側の
三相各相の導体４夫々から上記短絡バー１２に対向する
ように短絡接点片１３を突設し、また負荷側の三相各相
の導体４′夫々から上記短絡バー１２′に対向するよう
に短絡接点片１３′ を突設している。Three-phase bushings 2 and 2' are provided on one side wall of the closed switch main body l on the power supply side and the load side respectively, and cables are connected to the outside of the switch main body l of each bushing 2 or 2'. The connection terminals 3 and 3' are connected respectively, and the switch body l
A conductor 4 is connected to each inner bushing 2 or 2'. The conductors 4, 4' of the corresponding three phases on the power supply side and the load side are led to the switching contact mechanism section 5 in the switch main body l, and can be brought into contact and separated within this switching contact mechanism section 5. There is. In addition, a pressure relief port 6 is provided in one side wall of the switch main body 1 between the bushing 2 on the power supply side and the bushing 2' on the load side. The pressure relief port 6 is covered by a grid plate 7. Further, the grid plate 7 has a hole in the center thereof, and an operating rod 8 is slidably passed through this hole. A pressure relief valve 9 is fixed to the outer end of the operating rod 8 that protrudes outward from the switch main body 1.
is in contact with the periphery of the outer periphery 96a of the pressure relief port 6, and the pressure relief port 6
You can freely close your mouth. Further, an actuating plate IO is fixed to the inner end of the actuating rod 8 located inside the switch main body l. A spring spring 11 is provided on the outer periphery of the operating rod 8 between the operating plate 10 and the lattice plate 7, and the pressure relief valve 9 is always activated by the biasing force of the spring spring 11.
The pressure release port 6 is closed by pressing a. Shorting bars 12 and 12' are provided on both sides of the actuating plate 10, and shorting contact pieces 13 are provided protruding from the conductors 4 of each of the three phases on the power supply side so as to face the shorting bar 12. A shorting contact piece 13' is provided protruding from each of the conductors 4' of the three phases on the side so as to face the shorting bar 12'.
この実施例の場合開閉器の開閉は上記開閉接点機構部５
内で導体４と４′とが接触又は離脱して行われる。そし
て第３図１こ示す如く開閉器本体１内で短絡が生じ、ア
ーク１４が発生すると、開閉器本体１内の内圧が上昇し
、この内圧が予め定めた一定値以」二になるとスプリン
グバネ１１の力に抗して放圧弁９を押し、作動杆８を開
閉器本体ｌ外方へスライドさせて放圧弁９は放圧口６の
外周Ｑ６ａから離れて外方へ突出し、放圧１」６が開放
される。これにより開閉器本体１内の高温ガスは格子板
７の多数の透孔を通って放圧１−１６から外部へ放出さ
れる。In this embodiment, the switch is opened and closed by the switching contact mechanism section 5.
The conductors 4 and 4' are brought into contact with each other or separated from each other. When a short circuit occurs in the switch main body 1 and an arc 14 is generated as shown in FIG. Press the pressure relief valve 9 against the force of 11, slide the operating rod 8 outward from the switch main body l, and the pressure relief valve 9 separates from the outer periphery Q6a of the pressure relief port 6 and protrudes outward, releasing the pressure relief 1. 6 is released. As a result, the high-temperature gas within the switch main body 1 is discharged to the outside from the pressure relief 1-16 through the numerous through holes of the grid plate 7.
これと同時に作動杆８の内端に設けた作ｌＩ板１０も動
き１両側の短絡バー１２．１２′は夫々電源側の三相各
相の短絡接点片１３又は負荷側の三相各相の短絡接点）
Ｑ’Ｉ３’ と接触する。これにより電源側又は負荷側
で相短絡し、アーク短絡から金属短絡に移行し、上記ア
ーク１４が消滅する。そして開閉器本体ｌ内の内圧は下
１尭する。At the same time, the working plate 10 provided at the inner end of the operating rod 8 also moves, and the shorting bars 12 and 12' on both sides of the actuating rod 8 are connected to the shorting contact pieces 13 of each of the three phases on the power supply side or the shorting contact pieces 13 of each of the three phases on the load side, respectively. short circuit contact)
Contact with Q'I3'. This causes a phase short circuit on the power supply side or load side, transitioning from an arc short circuit to a metal short circuit, and the arc 14 disappears. The internal pressure inside the switch body 1 then decreases by one level.
さらにこの実施例では開閉器本体ｌ内の内圧のド降に伴
い、内圧が」―記予め定めた一定値未満になると上記ス
プリングバネ１１の力により、放圧弁９が放圧［１６を
再び塞ぎ、各短絡バー１２．１２’は各短絡接点片１３
．１３’ から離れ、白Ｖ）複＋ｊｌする。Furthermore, in this embodiment, as the internal pressure inside the switch main body 1 decreases, when the internal pressure becomes less than a predetermined constant value, the pressure relief valve 9 closes the pressure relief valve 16 again by the force of the spring spring 11. , each shorting bar 12, 12' is connected to each shorting contact piece 13
．． Away from 13', white V) doubles +jl.
またこの実施例に代えて、各短絡接点片１３又は＋３’
にロック機構を設け、これらの接点片１３又は１３’
に短絡バー１２又は１２’ が接触する際は短絡バー
１２又は１２’ の移動力により上記ロック機構内のバ
ネの力に抗して接触するが、いったん接触するとこのロ
ック機構がバネ等の力により短絡バー１２又は１２’
を把持し、短絡接点片１３又は１３′ と短絡バー１２
又は１２′ の接触を保持する構成としてもよい。Also, instead of this embodiment, each short circuit contact piece 13 or +3'
A locking mechanism is provided in the contact piece 13 or 13'.
When the shorting bar 12 or 12' comes into contact with the shorting bar 12 or 12', the moving force of the shorting bar 12 or 12' causes the contact against the force of the spring in the locking mechanism, but once it makes contact, the locking mechanism is stopped by the force of the spring, etc. Shorting bar 12 or 12'
Hold the shorting contact piece 13 or 13' and the shorting bar 12.
Alternatively, a structure may be adopted in which 12' contact is maintained.
（発明の効果）
この発明は開閉器内での短絡事故発生時に、内圧上昇に
よる放圧弁の放圧口の開放動作に連動させて、短絡バー
を電源側又は負荷側の短絡接点片と接触させ、これによ
りアーク短絡を金属短絡に移行させてアークエネルギー
をいち速く消滅させる。従ってアーク発生による高温ガ
スの爆発等を未然に防ぎ、開閉器本体内の機器の損侶や
開閉器本体外方への高温ガスの大量放出による通行人等
への危険を未然に防ぐものである。(Effects of the Invention) This invention brings the shorting bar into contact with the shorting contact piece on the power supply side or the load side in conjunction with the opening operation of the pressure relief port of the pressure relief valve due to the increase in internal pressure when a short circuit accident occurs in the switch. , thereby converting an arc short circuit into a metal short circuit and quickly extinguishing the arc energy. Therefore, it prevents explosions of high-temperature gas due to arc generation, and prevents damage to equipment inside the switch body and danger to passersby due to large amounts of high-temperature gas being released outside the switch body. .
また放圧弁を弾機により放圧口を密閉するよう付勢し、
開閉器内部の圧力が一定値未満となることにより当該弾
機の力により放圧弁が放圧口を閉じた際この放圧弁に連
動して」二記各短絡バーが各短絡接点片から離れる構成
のものは、アーク消滅後自動復帰し、電源側のしゃ断器
を投入して再送しても当該開閉器は機能する。Also, the pressure relief valve is energized by a bullet to seal the pressure relief port,
When the pressure inside the switch becomes less than a certain value and the pressure relief valve closes the pressure relief port due to the force of the bullet, each shorting bar moves away from each shorting contact piece in conjunction with this pressure relief valve. The switch automatically returns after the arc is extinguished, and the switch will function even if the circuit breaker on the power supply side is turned on and the transmission is repeated.
また短絡バーと短絡接点片との接触がロックされる構成
のものは電源側のしゃ断器を投入し再送しても当該開閉
器は相短絡しているため、事故等の発見がし易いもので
ある。In addition, if the contact between the shorting bar and the shorting contact piece is locked, even if you turn on the breaker on the power supply side and send the signal again, the phase of the switch will remain short-circuited, making it easy to discover accidents. be.
図はこの発明の実施例を示し、第１図はこの発明の断面
図、第２図は第１図の状態におけるこの発明の三相の短
絡接点片と短絡バーとの関係を示す説明図、第３図はこ
の発明の短絡アーク発生時の作動状態を示す断面図、第
４図は第３図の状態におけるこの発明の三相の短絡接点
片と短絡バーとの関係を示す説明図である。
なお図中１は開閉器本体、２はブッシング、４．４′は
導体、６は放圧Ｌ」、８は作動杆、９は放圧弁、１０は
作動板、１１はスプリングバネ、１２．１２’は短絡バ
ー、１３．１３’は短絡接点片である。
゛ごパ
第１図
第２図
第３図The figures show an embodiment of the present invention, FIG. 1 is a sectional view of the invention, FIG. 2 is an explanatory diagram showing the relationship between the three-phase shorting contact piece and the shorting bar of the invention in the state shown in FIG. 1, FIG. 3 is a cross-sectional view showing the operating state of the present invention when a short-circuit arc occurs, and FIG. 4 is an explanatory diagram showing the relationship between the three-phase short-circuit contact piece and the short-circuit bar of the present invention in the state of FIG. 3. . In the figure, 1 is the switch main body, 2 is the bushing, 4.4' is the conductor, 6 is the pressure relief L'', 8 is the operating rod, 9 is the pressure relief valve, 10 is the operating plate, 11 is the spring spring, 12.12 ' is a shorting bar, 13.13' is a shorting contact piece. Figure 1 Figure 2 Figure 3
Claims (3)
定値以上の内部圧力によって放圧口を開放する常閉型の
放圧弁を備えた密閉型の開閉器内において、電源側及び
負荷側の三相各相の電極に通じる導体から夫々短絡接点
片を設け、電源側の三相の短絡接点片と接触自在な一方
の短絡バーと、負荷側の三相の短絡接点片と接触自在な
他方の短絡バーとを設け、これらの短絡バーは上記放圧
弁と連動する構成としたことを特徴とする開閉器。(1) In a closed switchgear equipped with a normally closed pressure relief valve that uses air or insulating gas as an insulating and arc-extinguishing medium and opens the pressure relief port when the internal pressure exceeds a certain value, A shorting contact piece is provided from the conductor leading to the electrodes of each of the three phases on the side, and one shorting bar can freely contact the shorting contact piece of the three phases on the power supply side, and the shorting bar can freely contact the shorting contact piece of the three phases on the load side. and the other short-circuit bar, and these short-circuit bars are configured to interlock with the pressure relief valve.
勢され、開閉器内部の圧力が一定値未満となることによ
って上記弾機の力により放圧弁が放圧口を閉じた際この
放圧弁に連動して上記各短絡バーが各短絡接点片から離
れる構成としたことを特徴とする特許請求の範囲（１）
項記載の開閉器。(2) The pressure relief valve is urged to seal the pressure relief port by the bullet, and when the pressure inside the switch becomes less than a certain value, the pressure relief valve closes the pressure relief port due to the force of the bullet. Claim (1) characterized in that each of the shorting bars is separated from each of the shorting contact pieces in conjunction with the pressure relief valve.
Switch mentioned in section.
負荷側の三相の短絡接点片と接触すると、これをロック
するロック機構を備えていることを特徴とする特許請求
の範囲（１）項記載の開閉器。(3) Claims characterized in that each shorting bar is provided with a locking mechanism that locks the three-phase shorting contact piece on the power supply side or the three-phase shorting contact piece on the load side when it comes into contact with the three-phase shorting contact piece. The switch described in (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5701588A JPH0628126B2 (en) | 1988-03-10 | 1988-03-10 | Closed switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5701588A JPH0628126B2 (en) | 1988-03-10 | 1988-03-10 | Closed switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01231229A true JPH01231229A (en) | 1989-09-14 |
| JPH0628126B2 JPH0628126B2 (en) | 1994-04-13 |
Family
ID=13043610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5701588A Expired - Fee Related JPH0628126B2 (en) | 1988-03-10 | 1988-03-10 | Closed switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0628126B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04174918A (en) * | 1990-08-30 | 1992-06-23 | San'eisha Mfg Co Ltd | Forced short circuiting device for switch |
-
1988
- 1988-03-10 JP JP5701588A patent/JPH0628126B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04174918A (en) * | 1990-08-30 | 1992-06-23 | San'eisha Mfg Co Ltd | Forced short circuiting device for switch |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0628126B2 (en) | 1994-04-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |