JP4561578B2 - Vacuum circuit breaker - Google Patents

Vacuum circuit breaker Download PDF

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JP4561578B2
JP4561578B2 JP2005298294A JP2005298294A JP4561578B2 JP 4561578 B2 JP4561578 B2 JP 4561578B2 JP 2005298294 A JP2005298294 A JP 2005298294A JP 2005298294 A JP2005298294 A JP 2005298294A JP 4561578 B2 JP4561578 B2 JP 4561578B2
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circuit breaker
vacuum circuit
switchboard
trip
cradle
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JP2007110823A (en
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貴幸 岡崎
武 矢沢
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Fuji Electric FA Components and Systems Co Ltd
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Fuji Electric FA Components and Systems Co Ltd
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Description

本発明は、クレードルに搭載して閉鎖形配電盤の盤内に収納した引出形の真空遮断器に関し、詳しくは配電盤の扉を閉じた状態で盤外からのハンドル操作で真空遮断器を開極するようにした引外し操作機構に係わる。   The present invention relates to a drawer type vacuum circuit breaker mounted on a cradle and housed in a panel of a closed type switchboard, and more specifically, opens the vacuum circuit breaker by operating a handle from the outside of the panel with the switchboard door closed. This relates to the tripping operation mechanism.

頭記の真空遮断器として、遮断器本体をクレードルに搭載して閉鎖形配電盤（スイッチギア）の盤内に収容し、遮断器本体は台車上に操作機構を装備した操作部，および真空バルブを載置した上で、その操作部の前面に投入，引外し操作端（押ボタン，ハンドルなど）を備えた構成になる引出形の真空遮断器が周知であり（例えば、特許文献１参照）、その従来構造を図４，図５に示す。
図４，図５において、１は真空遮断器、２は真空遮断器１を載置したクレードル、３は配電盤、３ａは盤扉である。ここで真空遮断器１の遮断器本体は、台車１１に操作部１２，真空バルブ１３を載置し、台車１１をクレードル２に搭載してその底部のレール２１に沿って図示の運転位置から前方へ引出し可能に案内支持している。また、操作部１２の前面パネルには引外し操作ボタン１４，投入操作ボタン１５を備えており、さらに真空バルブ１３の固定，可動接極子に接続した回路導体１３ａ，１３ｂを背後に引出し、各導体の先端に備えた断路刃１３ｃを介してクレードル２の後部に配した主回路導体２２に接続するようにしている。 As the vacuum circuit breaker mentioned above, the circuit breaker body is mounted in a cradle and housed in a closed switchboard (switchgear) panel. The circuit breaker body has an operation unit equipped with an operation mechanism on the carriage and a vacuum valve. A drawer-type vacuum circuit breaker having a structure including a loading / removing operation end (push button, handle, etc.) on the front surface of the operation unit after being mounted is well known (for example, see Patent Document 1). The conventional structure is shown in FIGS.
4 and 5, 1 is a vacuum circuit breaker, 2 is a cradle on which the vacuum circuit breaker 1 is mounted, 3 is a switchboard, and 3a is a panel door. Here, the circuit breaker body of the vacuum circuit breaker 1 has the operation unit 12 and the vacuum valve 13 mounted on the carriage 11, the carriage 11 is mounted on the cradle 2, and moves forward from the illustrated operation position along the rail 21 at the bottom. The guide is supported so that it can be pulled out. The front panel of the operation unit 12 is provided with a trip operation button 14 and a closing operation button 15. Further, circuit conductors 13a and 13b connected to the fixed and movable armature of the vacuum valve 13 are pulled out to the back, and each conductor It connects with the main circuit conductor 22 distribute | arranged to the rear part of the cradle 2 through the disconnecting blade 13c with which the front-end | tip of this was equipped.

また、前記操作部１２に装備した操作機構は、遮断スプリング１２ａ，開閉レバー１２ｂ，該レバーと真空バルブ１３の可動接極子との間を連結した操作ロッド１２ｃ，接触バネ１２ｄ，開閉レバー１２ｂのローラ１２ｅに係止したラッチ１２ｆ，該ラッチ１２ｆと連動するトリップレバー１２ｇからなり、このトリップレバー１２ｇが図示されてないリンクを介して引外し操作ボタン１４に連繋されている。なお、図示は真空遮断器の運転位置で、操作機構の遮断スプリング１２ａを蓄勢して真空バルブ１３を閉極した投入状態を表している。
この状態で、配電盤３の扉３ａを開いて真空遮断器１の引外し操作ボタン１４を押すと、トリップレバー１２ｇを介してラッチ１２ｆが反時計方向に回動し、ローラ１２ｅから外れ開閉レバー１２ｂの鎖錠を釈放する。これにより、遮断スプリング１２ａのバネ力が放勢し、開閉レバー１２ｂを介して真空バルブ１３の可動接極子を開極する。 Further, the operation mechanism equipped in the operation unit 12 includes an interruption spring 12a, an opening / closing lever 12b, an operation rod 12c connecting the lever and the movable armature of the vacuum valve 13, a contact spring 12d, and a roller for the opening / closing lever 12b. The trip lever 12g is interlocked with a latch 12f locked to the latch 12f and the latch 12f. The trip lever 12g is connected to the trip operation button 14 through a link (not shown). The drawing shows a closed state in which the vacuum valve 13 is closed by accumulating the cutoff spring 12a of the operation mechanism at the operating position of the vacuum circuit breaker.
In this state, when the door 3a of the switchboard 3 is opened and the tripping operation button 14 of the vacuum circuit breaker 1 is pushed, the latch 12f is rotated counterclockwise via the trip lever 12g, and is disengaged from the roller 12e to be released from the opening / closing lever 12b. Release the lock. Thereby, the spring force of the cutoff spring 12a is released, and the movable armature of the vacuum valve 13 is opened via the opening / closing lever 12b.

なお、真空遮断器を投入するには、遮断器付属の電動機により開閉レバー１２ｂの軸を反時計方向に回して該レバーに連結した遮断スプリング１２ａを蓄勢した上で、投入操作ボタン１５を押す。これによりラッチ１２ｅが開閉レバー１２ｂを鎖錠位置に係止して真空バルブ１３が閉極位置に拘束保持される。
特開平５−２６６７６６号公報 In order to turn on the vacuum circuit breaker, the shaft of the open / close lever 12b is rotated counterclockwise by an electric motor attached to the breaker, and the breaking spring 12a connected to the lever is stored, and then the closing operation button 15 is pushed. . As a result, the latch 12e locks the open / close lever 12b in the locked position, and the vacuum valve 13 is restrained and held in the closed position.
JP-A-5-266766

ところで、前記した従来の真空遮断器では操作機能，保安面で次記のような問題点ある。すなわち、真空遮断器を主回路に接続した通電状態で、遮断器の操作電源喪失などの異常事態が生じて遮断器を手動で引外す場合には、配電盤３の扉３を開いた上で保守員が前方から引外し操作ボタン１４を押すようにしている。このために、作業中に遮断室内でアーク事故が万一発生した場合には、配電盤の扉が開放しているために、思わぬ人的，物的災害を招くおそれがある。
本発明は上記の点に鑑みなされたものであり、前記したような盤内でのアーク事故による人的災害を防ぎ、また操作電源の喪失状態でも配電盤の扉を開かずに盤外からのハンドル操作で遮断器を安全に開極させる引外し操作機構を追加装備して操作機能，保安性の向上を図った真空遮断器を提供することを目的とする。 By the way, the above-described conventional vacuum circuit breaker has the following problems in terms of operation function and security. That is, when the circuit breaker is manually pulled out due to an abnormal situation such as loss of the circuit breaker operating power with the vacuum circuit breaker connected to the main circuit, maintenance is performed after the door 3 of the switchboard 3 is opened. An operator pulls it from the front and presses the operation button 14. For this reason, if an arc accident occurs in the shut-off room during work, the switchboard doors are open, which may cause unexpected human and physical disasters.
The present invention has been made in view of the above points, and prevents a human disaster due to an arc accident in the panel as described above, and handles from the outside of the panel without opening the switchboard door even when the operation power supply is lost. The purpose is to provide a vacuum circuit breaker that is equipped with a tripping operation mechanism that opens the circuit breaker safely by operation and has improved operational functions and safety.

上記目的を達成するために、本発明によれば、遮断器本体をクレードルに搭載して閉鎖形配電盤の盤内に収容した引出形の真空遮断器で、遮断器本体の台車上に操作機構を装備した操作部，および真空バルブを載置し、前記操作部の前面に投入，引外し操作端を備えた構成において、
配電盤の扉を閉じた状態で、盤外からのハンドル操作により真空遮断器をその運転位置で引外す操作手段として、遮断器本体の台車側に操作入力端を台車の底面に臨ませて前記操作機構のトリップレバーに連繋させた中継リンク機構を追加装備するとともに、該中継リンク機構の操作入力端に対向してクレードルの底部側には、盤外の前方からから差し込んだ引外し操作ハンドルの操作力を前記中継リンク機構に伝える引外し操作伝達機構を備えるものとし（請求項１）、その引外し操作伝達機構は具体的に次記のような態様で構成する。
（１）前記の引外し操作伝達機構が、引外し操作ハンドルと繋ぐ継手部をクレードルの底部前端に臨ませて配置した回転軸と、該軸の回転に連動して遮断器本体の台車側に備えた中継リンク機構の操作入力端に向けて出没する操作ロッドとから構成する（請求項２）。
（２）クレードルの底部に配備したの回転軸，および配電盤の盤外から前記回転軸に連結する引外し操作ハンドルの差し込み位置を、配電盤の扉から外れた前面パネル部に設定する（請求項３）。 In order to achieve the above object, according to the present invention, a circuit breaker body mounted on a cradle and housed in a panel of a closed type switchboard, an operating mechanism is provided on a carriage of the circuit breaker body. In the configuration where the equipped operation unit and vacuum valve are placed and the operation unit is equipped with a throw-in and trip-off end on the front surface,
With the switchboard door closed, as a means of operating the vacuum circuit breaker at its operating position by operating the handle from the outside of the switchboard, the operation input terminal is faced to the bottom of the carriage, and the above operation is performed. A relay link mechanism linked to the trip lever of the mechanism is additionally equipped, and the operation of a tripping operation handle inserted from the front outside the panel on the bottom side of the cradle is opposed to the operation input end of the relay link mechanism. A tripping operation transmission mechanism for transmitting force to the relay link mechanism is provided (claim 1), and the tripping operation transmission mechanism is specifically configured in the following manner.
(1) The above-mentioned trip operation transmission mechanism has a rotating shaft arranged with a joint portion connected to the trip operation handle facing the front end of the bottom of the cradle; And an operation rod that protrudes and protrudes toward the operation input end of the relay link mechanism provided.
(2) The insertion position of the rotary shaft provided at the bottom of the cradle and the trip operation handle connected to the rotary shaft from the outside of the switchboard is set to the front panel portion removed from the switchboard door. ).

上記の構成によれば、配電盤の扉を開放することなく、盤外からのハンドル操作で真空遮断器を引外し操作すること可能となり、例えば遮断器の操作電源が喪失した異常事態でも、保守員の安全性を確保して遮断器を手動で盤外から引外すことができる。
しかも、クレードルの底部側に設けた引外し操作伝達機構を回転式とし、その操作ハンドルを配電盤の扉から外れた前面パネル部の位置から差し込んで回動操作するようにしたことで、配電盤の扉を閉じたままでも誤操作のおそれなしに遮断器の引外し操作が行えて信頼性を確保できる。 According to the above configuration, the vacuum circuit breaker can be tripped and operated by operating the handle from the outside without opening the switchboard door. The circuit breaker can be manually pulled out of the panel while ensuring safety.
In addition, the tripping operation transmission mechanism provided on the bottom side of the cradle is a rotary type, and its operation handle is inserted from the position of the front panel part that is detached from the switchboard door, so that it can be rotated. Even when the switch is closed, the circuit breaker can be tripped without fear of erroneous operation, ensuring reliability.

以下、本発明の実施の形態を図１〜図３に示す実施例に基づいて説明する。なお、実施例の図中で図４，図５に対応する部材には同じ符号を付してその説明は省略する。
すなわち、図示実施例の真空遮断器においては、図４，図５に示した従来構造に加えて、遮断器本体の操作部１２には、トリップレバー１２ｇに連繋させてその操作入力端を台車１１の底面側に臨ませて配置した中継リンク機構１２ｈを追加装備するとともに、該中継リンク機構１２ｈの操作入力端に対向してクレードル２の底部側には引外し操作伝達機構４を設け、この操作伝達機構４を介して配電盤３の盤外前方から差し込んで回す引外し操作ハンドル５の操作力を中継リンク機構１２ｈに伝えるようにしている。
ここで、前記の中継リンク機構１２ｈは、図３で示すように台車１１の底面側に臨ませて枢支したレバー（操作入力端）１２ｈ−１と、先端をトリップレバー１２ｇに押し当ててスライド可能にガイド金具１２ｈ−３の長穴で案内支持したプッシャ１２ｈ−２と、前記レバー１２ｈ−１の枢軸とプッシャ１２ｈ−２との間を結ぶ連結リンク１２ｈ−４とからなる。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on the examples shown in FIGS. In the drawing of the embodiment, members corresponding to those in FIG. 4 and FIG.
That is, in the vacuum circuit breaker of the illustrated embodiment, in addition to the conventional structure shown in FIGS. 4 and 5, the operation input terminal of the operation unit 12 of the circuit breaker main body is connected to the trip lever 12g and is connected to the carriage 11. A relay link mechanism 12h arranged facing the bottom surface of the cradle 2 is additionally provided, and a trip operation transmission mechanism 4 is provided on the bottom side of the cradle 2 so as to face the operation input end of the relay link mechanism 12h. The operating force of the tripping operation handle 5 inserted and rotated from the front of the switchboard 3 through the transmission mechanism 4 is transmitted to the relay link mechanism 12h.
Here, as shown in FIG. 3, the relay link mechanism 12h slides with a lever (operation input end) 12h-1 pivoted so as to face the bottom surface of the carriage 11 and a tip pressed against the trip lever 12g. The pusher 12h-2 is guided and supported by the elongated hole of the guide metal fitting 12h-3, and the connecting link 12h-4 connects the pivot of the lever 12h-1 and the pusher 12h-2.

一方、クレードル２の底部側に構築した引外し操作伝達機構４は、引外し操作ハンドル５と繋ぐ継手部をクレードル２の底部前端面に臨ませて前後の向きに軸支配置した回転軸４１と、図２で示すように前記回転４１の軸上にレバー介して連結し、回転軸４１の回転に従動してクレードル２の底面から中継リンク機構１２ｈのレバー（操作入力端）１２ｈ−１に向けて出没するよう上下スライド可能に案内支持されたロッド４２からなる。なお、ロッド４２の取付け位置は、図１のように真空遮断器１の運転位置で前記レバー１２ｈ−１と上下に対峙するように位置決めされている。また、回転軸４１の先端継手部は、配電盤３に対してその盤扉３ａから外れた下方側の前面パネル部に臨むように配置されており、この前面パネル部にハンドル穴を開口して配電盤３の前方から差し込んだ引外し操作ハンドル５と結合するようにしている。   On the other hand, the tripping operation transmission mechanism 4 constructed on the bottom side of the cradle 2 has a rotary shaft 41 that is pivotally arranged in the front-rear direction with the joint portion connected to the tripping operation handle 5 facing the front end surface of the bottom of the cradle 2. As shown in FIG. 2, it is connected to the shaft of the rotation 41 via a lever, and is driven by the rotation of the rotation shaft 41 from the bottom surface of the cradle 2 toward the lever (operation input end) 12h-1 of the relay link mechanism 12h. It consists of a rod 42 that is guided and supported so as to slide up and down. The mounting position of the rod 42 is positioned so as to face the lever 12h-1 up and down at the operating position of the vacuum circuit breaker 1 as shown in FIG. Further, the tip joint portion of the rotary shaft 41 is disposed so as to face the lower front panel portion removed from the panel door 3a with respect to the switchboard 3, and a handle hole is opened in the front panel portion to turn the switchboard. 3 is connected to a tripping operation handle 5 inserted from the front of the head 3.

上記の構成で、真空遮断器１を手動で引外し操作する場合には、図４で述べたと方法と同様に配電盤３の盤扉３を開いた上で、遮断器本体の操作部前面に設けた引外し操作ボタン１４を押して引外す方法のほか、操作電源が喪失した場合などの異常事態の下で遮断器を引外すには、次記のように配電盤の盤扉３を閉じたまま盤外からのハンドル操作で引外す方法を選択できる。
すなわち、盤外から引外し操作ハンドル５を差し込んで引外し装置操作伝達機構４の回転軸４１に連結した上でハンドル５を回すと、前記ロッド４２がクレードル２の底部から上方に突き出して遮断器本体の台車１１側に設けた中継リンク機構１２ｈ（図３参照）のレバー１２ｈ−１を上方に突き上げる。これにより、連結リンク１２ｈ−４を介してプッシャ１２ｈ−２が操作機構のトリップレバー１２ｇを右方に押し、これに応動するラッチ１２ｅが開閉レバー１２ｂの鎖錠を釈放して真空バルブ１３を開極する。 In the above configuration, when the vacuum circuit breaker 1 is manually pulled out, the panel door 3 of the switchboard 3 is opened in the same manner as described in FIG. In addition to the method of pushing the tripping operation button 14 and tripping, in order to trip the circuit breaker under abnormal circumstances such as when the operating power is lost, the panel door 3 of the switchboard is closed as follows You can select the trip method by operating the handle from the outside.
That is, when the operation handle 5 is inserted from the outside of the panel and connected to the rotary shaft 41 of the trip device operation transmission mechanism 4 and then the handle 5 is turned, the rod 42 protrudes upward from the bottom of the cradle 2 and breaks the circuit breaker. The lever 12h-1 of the relay link mechanism 12h (see FIG. 3) provided on the cart 11 side of the main body is pushed upward. As a result, the pusher 12h-2 pushes the trip lever 12g of the operation mechanism to the right via the connecting link 12h-4, and the latch 12e that moves in response releases the lock of the opening / closing lever 12b to open the vacuum valve 13. To the extreme.

このように、配電盤３の盤扉３ａを閉じたまま盤外からのハンドル操作で真空遮断器１を引外すことにより、盤内の遮断室内でアーク事故が発生した場合でも、保守員の人的災害を未然に防いでスイッチギアの安全性を確保できる。   In this way, even when an arc accident occurs in the shut-off chamber in the panel by pulling off the vacuum circuit breaker 1 by operating the handle from the outside with the panel door 3a of the switchboard 3 closed, the maintenance personnel It is possible to prevent disasters and ensure the safety of switchgear.

クレードルに搭載して配電盤に収納した本発明の実施例による真空遮断器の構造を示す側面図Side view showing the structure of a vacuum circuit breaker according to an embodiment of the present invention mounted on a cradle and housed in a switchboard 図１の正面図Front view of FIG. 図１における真空遮断器本体の拡大図Enlarged view of the vacuum circuit breaker body in FIG. クレードルに搭載して配電盤に収納した真空遮断器の従来構造を示す側面図Side view showing the conventional structure of a vacuum circuit breaker mounted in a cradle and housed in a switchboard 図４の正面図Front view of FIG.

符号の説明Explanation of symbols

１ 真空遮断器
１１ 台車
１２ 操作部
１２ａ 遮断器スプリング
１２ｂ 開閉レバー
１２ｆ ラッチ
１２ｇ トリップレバー
１２ｈ 中継リンク機構
１２ｈ−１ レバー（操作入力端）
１３ 真空バルブ
１４ 引外し操作ボタン
２ クレードル
２１ 底部のレール
３ 配電盤
３ａ 盤扉
４ 引外し操作伝達機構
４１ 回転軸
４２ ロッド
５ 引外し操作ハンドル DESCRIPTION OF SYMBOLS 1 Vacuum circuit breaker 11 Carriage 12 Operation part 12a Circuit breaker spring 12b Open / close lever 12f Latch 12g Trip lever 12h Relay link mechanism 12h-1 Lever (operation input end)
13 Vacuum valve 14 Trip operation button 2 Cradle 21 Bottom rail 3 Power distribution board 3a Panel door 4 Trip operation transmission mechanism 41 Rotating shaft 42 Rod 5 Trip operation handle

Claims (3)

遮断器本体をクレードルに搭載して閉鎖形配電盤の盤内に収容した引出形の真空遮断器であり、遮断器本体の台車上に操作機構を装備した操作部，および真空バルブを載置し、前記操作部の前面に投入，引外し操作端を備えたものにおいて、
配電盤の扉を閉じた状態で、盤外からのハンドル操作により真空遮断器をその運転位置で引外す操作手段として、操作入力端を遮断器本体の台車底面に臨ませて前記操作機構のトリップレバーに連繋させた中継リンク機構を追加装備するとともに、該中継リンク機構の操作入力端に対向してクレードルの底部側には、盤外からから差し込んだ引外し操作ハンドルの操作力を前記中継リンク機構に伝える引外し操作伝達機構を備えたことを特徴とする真空遮断器。 This is a drawer type vacuum circuit breaker with the circuit breaker body mounted in the cradle and housed in the panel of the closed type switchboard. The operation part equipped with the operation mechanism and the vacuum valve are placed on the carriage of the circuit breaker body. In the one equipped with a throw-in / trip-out operation end on the front of the operation unit,
With the switchboard door closed, as a means of operating the vacuum circuit breaker at its operating position by operating the handle from outside the panel, the operation input end faces the bottom of the circuit breaker body and the trip lever of the operation mechanism A relay link mechanism linked to the relay link mechanism is additionally provided, and the operation force of the tripping operation handle inserted from outside the panel is applied to the bottom side of the cradle facing the operation input end of the relay link mechanism. A vacuum circuit breaker characterized by having a trip operation transmission mechanism that transmits to 請求項１記載の真空遮断器において、引外し操作伝達機構が、引外し操作ハンドルと繋ぐ継手部をクレードルの底部前端に臨ませて配置した回転軸と、該軸の回転に連動して遮断器本体に備えた前記中継リンク機構の操作入力端に向けて出没する操作ロッドとからなることを特徴とする真空遮断器。 2. The vacuum circuit breaker according to claim 1, wherein the tripping operation transmission mechanism has a rotary shaft arranged with a joint portion connected to the tripping operation handle facing the front end of the bottom of the cradle, and the circuit breaker in conjunction with the rotation of the shaft. A vacuum circuit breaker comprising: an operation rod that protrudes and protrudes toward an operation input end of the relay link mechanism provided in the main body. 請求項２記載の真空遮断器において、クレードルの底部に配備した引外し操作伝達機構の回転軸，および配電盤の盤外から前記回転軸に連結する引外し操作ハンドルの差し込み位置を、配電盤の扉から外れた前面パネル部に設定したことを特徴とする真空遮断器。 3. The vacuum circuit breaker according to claim 2, wherein the rotary shaft of the trip operation transmission mechanism provided at the bottom of the cradle and the insertion position of the trip operation handle connected to the rotary shaft from the outside of the switchboard are connected from the door of the switchboard. A vacuum circuit breaker characterized in that it is set on the detached front panel.
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KR20230149016A (en) * 2022-04-19 2023-10-26 엘에스일렉트릭(주) Pull-out apparatus and cart apparatus carrying the same

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JPS5235843A (en) * 1975-09-17 1977-03-18 Hitachi Ltd Power board
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CN102683065A (en) * 2011-03-10 2012-09-19 Ls产电株式会社 Door interlock device for vacuum breaker
CN102683065B (en) * 2011-03-10 2014-10-29 Ls产电株式会社 Door interlock device for vacuum breaker

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