200412003 五、發明說明（1) [發明所屬之技術領域] 本發明係有關一種氣體絕緣開關裝置，尤指，關於一 種具備氣槽之氣體絕緣開關裝置，該氣槽係具有用以密閉 氣槽本體前面且可拆卸之安裝板。 [先前技術] 習用氣體絕緣開關裝置，係將斷路器及内附接地開關 之斷電器等主電路機器收容於封入有絕緣氣體的氣槽内， 而在設於該等主電路機器上方之氣槽頂壁之貫穿孔貫穿安 Μ線連接用的套筒。且將斷路器組裝於氣槽前壁，而將 接地開關之斷電器組裝於氣槽底壁（參照曰本特開 2 0 0 1 - 3 5 2 6 2 3號公報，第1及第2圖）。 又，於另一習用氣體絕緣開關裝置中，係將氣槽分割 為前後二部分，將前半部氣槽之一部分作為面板，在該面 板上安裝斷路器及内附接地開關之斷電器等主電路機器 ‘乂參照曰本特開平8 - 3 0 6 2 7 7號公報）。 貴。 _ 習用開關裝置係如上述構成，故於連接母線時，操作 員需爬上開關裝置上方之氣槽頂壁上，而於高處的作業有 其危險性，又，由於該開關裝置上面需具有能承受母線連 作員之體重的強度，因而需補強氣槽，造成成本昂 再者，由於係將母線用套筒及内附接地開關之斷電器 之入口端子組裝於不同面，因此該相互之組裝孔位置的誤 差較大，且為了在發生較大誤差之情況下亦能進行連接， 連接導體須具備可撓性，因而造成成本昂貴。200412003 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a gas-insulated switchgear, in particular, to a gas-insulated switchgear provided with an air tank, the air tank having a body for sealing the air tank Front and removable mounting plate. [Prior technology] The conventional gas-insulated switchgear is to house the main circuit equipment such as circuit breakers and circuit breakers with grounding switches in an air tank sealed with insulation gas, and the gas provided above the main circuit equipment The through hole of the top wall of the groove penetrates the sleeve for connecting the ampere wires. The circuit breaker is assembled on the front wall of the air tank, and the circuit breaker of the grounding switch is assembled on the bottom wall of the air tank (refer to Japanese Patent Publication No. 2 0 0 1-3 5 2 6 2 3, Nos. 1 and 2 Figure). Also, in another conventional gas-insulated switchgear, the air groove is divided into two parts, the front half of the air groove is used as a panel, and a main circuit breaker such as a circuit breaker and a grounding switch with a grounding switch is installed on the panel. Circuit equipment '(refer to Japanese Patent Application Publication No. 8-3 0 6 2 7 7). expensive. _ The conventional switchgear is structured as described above, so when connecting the bus, the operator needs to climb on the top wall of the air trough above the switchgear, and working at high places is dangerous, and because the switchgear needs to have It can bear the strength of the weight of the busbar workers, so it is necessary to strengthen the air groove, which is costly. Furthermore, because the busbar sleeve and the inlet terminals of the circuit breaker with a grounding switch are assembled on different sides, The error of the position of the assembly hole is large, and in order to make the connection even in the case of a large error, the connecting conductor must be flexible, which results in high cost.
314276.ptd 第6頁 200412003 五、發明說明（2) [發明内容] 本發明係在具有用以密閉氣槽本體前面，且可拆卸之 安裝板的氣槽内，配置斷路器及内附接地開關之斷電器， 並貫穿設置上述氣槽之氣槽壁而設置母線用套筒的氣體絕 緣開關裝置，其中，係使斷路器、内附接地開關的斷電 器，及母線用套管，支撐於共同的單一安裝板。 [實施方式] 如第1圖所示，係於由薄板金屬所構成之架台1上設置 氣槽2。氣槽2之前面（圖中為左側）係形成缺口狀。該氣槽 2具備有：在氣槽前面之氣槽壁形成有開口部2a之氣槽本 體2 b ;及以氣密方式閉塞氣槽本體2 b之開口部2 a，以構成 氣槽壁一部分的安裝板3，且在該氣槽2之内部填充絕緣氣 體。該安裝板3為位於大略同一平面内的單一平板狀物， 且於安裝板3之背面，中固體絕緣物所構成之中空絕緣支 持體之支持絕緣筒4的一方側，係以隔有空隙之方式安裝 在真空斷路器5之主電路部分之間，而於支持絕緣筒4之内 側收納有：作為斷路器的真空開關管（VST) 6 ;及連接真空 開關管6之可動軸7與内附接地開關之斷電器用葉片支持端 子8間之可撓導體9等真空斷路器5的主電路部。又於支持 絕緣筒4之内側亦收納有：貫穿安裝板3之開口部3 a，以將 真空開關管6之可動軸7與斷路器用操作部1 0予以絕緣，且 以機械方式連接的絕緣桿1 1 ;以及連接絕緣桿1 1及真空開 關管6之可動軸7的連接器1 2等機械零件。又於支持絕緣筒 4上設置内附接地開關的斷電器1 3。然後，在安裝板3之前314276.ptd Page 6 200412003 V. Description of the invention (2) [Summary of the invention] The present invention is arranged in a gas trough with a detachable mounting plate for sealing the front of the air trough body, and is provided with a circuit breaker and a grounding switch. A gas-insulated switchgear that is provided with a busbar sleeve through the wall of the gas trough provided with the circuit breaker, wherein a circuit breaker, a circuit breaker with a grounding switch and a bushing for the busbar are supported. For common single mounting plate. [Embodiment] As shown in Fig. 1, an air groove 2 is provided on a stand 1 made of a thin metal plate. The front surface (left side in the figure) of the air groove 2 is formed in a notch shape. The air trough 2 is provided with an air trough body 2 b having an opening 2 a formed on an air trough wall in front of the air trough, and an opening 2 a which air-tightly closes the opening 2 a of the air trough body 2 b to constitute a part of the air trough wall. The mounting plate 3 is filled with an insulating gas inside the air groove 2. The mounting plate 3 is a single flat plate located in approximately the same plane, and on the back of the mounting plate 3, one side of the supporting insulating tube 4 of a hollow insulating support composed of a solid solid insulator is separated by a gap. It is installed between the main circuit parts of the vacuum circuit breaker 5, and is housed inside the supporting insulation tube 4: a vacuum switch tube (VST) 6 as a circuit breaker; and a movable shaft 7 and a The blade for the breaker of the grounding switch supports the main circuit portion of the vacuum circuit breaker 5 such as the flexible conductor 9 between the terminals 8. Also contained inside the supporting insulating cylinder 4 are: an opening portion 3 a penetrating the mounting plate 3 to insulate the movable shaft 7 of the vacuum switch tube 6 from the operating portion 10 of the circuit breaker and a mechanically connected insulating rod 11; and mechanical parts such as the connector 12 connecting the insulating rod 11 and the movable shaft 7 of the vacuum switch tube 6. A circuit breaker 13 with a grounding switch is provided on the supporting insulating cylinder 4. Then, before mounting plate 3
314276.ptd 第 7 頁 A‘令崎产 200412003 ，五、發明說明（3) :側設真空斷路器用操作部1 0及内附接地開關的斷電器用操 作部1 5。 在支持絕緣筒4之安裝板3的相反側，藉由固定端子1 7 安裝有真空開關管6的固定側端子1 6，而從該上部之支持 絕緣筒4朝上方突出有支持突出部4 a，且安裝有内附接地 開關的斷電器1 3之進口側端子1 8，又於支持絕緣筒4之真 空開關管可動軸7上方，設有比支持突出部4a小的突出部 4b，且於該突出部4b組裝有内附接地開關斷電器1 3的葉片 支持端子8，又，於小突出部4b的安裝板3側設置有貫穿支 Λ邑緣筒4的開口部2 0，而藉由貫穿該開口部2 0之可撓導 體9，將真空開關管6之可動軸7連接於内附接地開關之斷 電器1 3的葉片支持端子8。内附接地開關之斷電器1 3的接 地端子2 9係藉由套管3 0，安裝於設在氣槽2前面之安裝 板。 、 氣槽2前面下方的缺口部，係以每相在支持絕緣筒4下 方形成與支持絕緣筒4同程度間距的開口部，且設有以氣 密方式閉塞該開口部之作為絕緣構件的電纜連接用套管 2 5，並藉由電纜端子2 6連接有電力電纜2 7。 φ在氣槽2前面的安裝板3上，於操作部1 0、1 5及接地端 子胃2 9的上方位置，以每相中與支持絕緣筒4為同程度的間 距，且於偏移上下方向之位置形成有比母線2 1外徑尺寸略 大的開口部3 b，且設有將該開口部3 b予以氣密封塞之作為 絕緣構件的母線用套管2 2。而在母線用套管2 2中心，以貫 穿母線用套管2 2方式埋設有内部導體2 2 a，在内部導體2 2 a314276.ptd Page 7 A’Lingzaki 200412003, V. Description of the invention (3): Operating unit 10 for vacuum circuit breakers on the side and operating unit 15 for breakers with a grounding switch. On the opposite side of the mounting plate 3 supporting the insulating cylinder 4, the fixed-side terminal 16 of the vacuum switching tube 6 is mounted through the fixed terminal 17, and a support protrusion 4 a projects upward from the upper supporting insulating cylinder 4. And an inlet-side terminal 18 of a breaker 13 with a grounding switch is installed above the movable shaft 7 of the vacuum switch tube supporting the insulating cylinder 4 and is provided with a protruding portion 4b smaller than the supporting protruding portion 4a, and A blade support terminal 8 with a ground switch breaker 13 is incorporated in the protruding portion 4b, and an opening portion 20 is formed on the mounting plate 3 side of the small protruding portion 4b so as to penetrate through the cylindrical tube 4 and The flexible shaft 9 passing through the opening 20 connects the movable shaft 7 of the vacuum switching tube 6 to the blade supporting terminal 8 of the breaker 13 with a grounding switch. The ground terminal 2 9 of the circuit breaker 1 3 with a grounding switch is installed on a mounting plate provided in front of the air tank 2 through a sleeve 30. The notch at the front and bottom of the air groove 2 is an opening with the same pitch as the supporting insulation cylinder 4 is formed below the supporting insulation cylinder 4 for each phase, and a cable as an insulation member is used to block the opening in an airtight manner. The connecting sleeve 25 is connected to a power cable 27 through a cable terminal 26. φ is on the mounting plate 3 in front of the air tank 2, above the operating sections 10, 15 and the ground terminal stomach 29, with the same distance as the supporting insulation cylinder 4 in each phase, and above and below the offset An opening 3 b slightly larger than the outer diameter of the bus bar 21 is formed at a position in the direction, and a bushing 22 for a bus bar is provided as an insulating member by hermetically sealing the opening 3 b. An inner conductor 2 2 a is buried in the center of the bus bushing 2 2, and the inner conductor 2 2 a is buried through the bushing 22.
314276.ptd 第8頁 200412003 五、發明說明（4) 之兩側作成可連接導體的構造（例如螺絲加工），而其一方 係藉由連接導體3 1連接在内附接地開關的斷電器之入口側 端子1 8，且在另一方連接有固體絕緣母線2卜 母線用套管2 2係於將安裝板3與真空斷路器5及内附接 地開關之斷電器1 3等一起組裝於氣槽體2b前，先安裝於安 裝板3之開口部3b，而在藉由連接導體31將母線用套管22 及内附接地開關之斷電器1 3之入口側端子1 8予以連接後， 再將安裝板3以氣密方式組裝在氣槽本體2b。而在連接固 體絕緣母線2 1時，係由開關裝置前面，將固體絕緣母線2 1 連接於母線用套管2 2，必要時，亦可安裝用以隔開固體絕 緣母線21與周圍之蓋體32。 在該氣體絕緣開關裝置之實施形態中，係於具有用以 密閉氣槽本體2b前面且可拆卸之安裝板3之氣槽2内，配置 斷路器5及内附接地開關的斷電器1 3，且貫穿氣槽2之氣槽 壁而設置母線用套管2 2，因此，斷路器5、内附接地開關 的斷電器1 3，及母線用套管2 2等皆係位於大致同一平面内 的平板狀者，且支撐於共同單一安裝板3。而且，内附接 地開關的斷電器1 3的接地端子2 9係貫穿安裝板3而支撐於 母線用套管下方。又，斷路器5及内附接地開關的斷電器 1 3係由支撐於安裝板3之支持絕緣體4所支撐。而母線用套 管2 2係在内附接地開關的斷電器1 3之接地端子2 9上方位 置，設置於安裝板3。 根據上述氣體絕緣開關裝置，由於母線用套管2 2與内 附接地開關的斷電器1 3係組裝於同一安裝板3，因此其用314276.ptd Page 8 200412003 V. Description of the invention (4) Both sides are made of a structure that can be connected to the conductor (such as screw processing), and one of them is connected to the circuit breaker with a grounding switch by the connecting conductor 31 The inlet side terminal 18 is connected to the other side with a solid insulated bus bar 2 and a bus bushing 2 2 for assembling the mounting plate 3 with the vacuum circuit breaker 5 and the circuit breaker 1 3 with a grounding switch. Before the groove body 2b, it is first installed in the opening 3b of the mounting plate 3, and after the busbar sleeve 22 and the inlet-side terminal 18 of the breaker 13 with a grounding switch are connected by the connecting conductor 31, The mounting plate 3 is then air-tightly assembled to the air tank body 2b. When connecting the solid insulation bus 21, the solid insulation bus 21 is connected to the bus bushing 2 2 from the front of the switch device. If necessary, a solid insulation bus 21 can be installed to separate the solid insulation bus 21 from the surrounding cover. 32. In this embodiment of the gas-insulated switchgear, the circuit breaker 5 and the circuit breaker 1 with a grounding switch 1 3 are arranged in the air groove 2 having a detachable mounting plate 3 in front of the air groove body 2b. And the busbar sleeve 2 2 is provided through the wall of the gas trough 2. Therefore, the circuit breaker 5, the circuit breaker 1 3 with a grounding switch, and the busbar sleeve 2 2 are all located on substantially the same plane. The inner flat plate is supported by a common single mounting plate 3. Further, the ground terminal 2 9 of the circuit breaker 1 3 with the ground switch attached is penetrated through the mounting plate 3 and supported below the busbar bushing. The circuit breaker 5 and the circuit breaker 1 3 with a grounding switch are supported by a support insulator 4 supported on a mounting plate 3. The bus bushing 2 2 is located above the ground terminal 2 9 of the circuit breaker 1 3 with a grounding switch, and is installed on the mounting plate 3. According to the above gas-insulated switchgear, since the bushing 22 for the bus bar and the breaker 1 3 with a grounding switch are assembled on the same mounting plate 3,
314276.ptd 第 9 頁 200412003 五，、發明說明（5) 以相互連接的開口部3a及3b之孔位置誤差較小，無須對連 接導體3 1施以特殊加工，亦無須使用高價的可撓性導體作 為連接導體3 1。同時，可將連接導體3 1的連接作業在氣槽 2之外部完成。因而作業性良好，且連接後的確認亦容 易，故得以短縮作業時間及提升品質。又由於係母線用套 管2 2係安裝於氣槽2之前面之安裝板3，因而無須爬上氣槽 2之頂壁上進行作業，得以使作業容易，同時亦可實現氣 槽之輕量化。 再者，由於將母線用套管2 2設置在絕緣安裝的内附接 地β關的斷電器1 3之接地端子2 9附近，因此將接地端子2 9 從接地電位切離時之接地端子2 9與接地部間之靜電電容C j、與接地端子2 9與母線用套管2 2間之靜電電容C Α比會變 大，可藉由接地端子2 9對母線部分2 1進行檢電。該接地端 子部2 9之電壓V df系相對於主電路電壓V両由第2圖所示的下 式求得。 V=[CV(CrfC2)]x V〇314276.ptd Page 9 200412003 V. Description of the invention (5) The hole position error of the openings 3a and 3b connected to each other is small, and it is not necessary to perform special processing on the connecting conductor 31, and it is not necessary to use expensive flexibility The conductor is used as the connecting conductor 31. At the same time, the connection work of the connection conductor 31 can be completed outside the air tank 2. Therefore, the workability is good, and the confirmation after the connection is easy, so the operation time can be shortened and the quality can be improved. In addition, since the busbar sleeve 2 2 is installed on the mounting plate 3 in front of the air tank 2, there is no need to climb on the top wall of the air tank 2 to perform the operation, which makes the operation easy and at the same time realizes the weight reduction of the air tank. . Furthermore, since the bushing 2 for the bus bar is installed near the ground terminal 2 9 of the disconnector 1 3 with a grounded β shut-off, the ground terminal 2 9 is cut off from the ground potential. The capacitance C j between 9 and the grounding portion and the ground terminal 2 9 and the capacitance C A between the busbar 22 and the busbar 2 2 will become larger. The bus terminal 21 can be detected by the ground terminal 2 9. The voltage V df of the ground terminal portion 29 is obtained with respect to the main circuit voltage V 両 by the following formula shown in FIG. 2. V = [CV (CrfC2)] x V〇
314276.ptd 第10頁 200412003 圖式簡單說明 [圖式簡單說明] 第1圖表示本發明之氣體絕緣開關裝置之實施形態之 側剖視圖。 第2圖由本發明之氣體絕緣開關裝置中之接地端子檢 測母線部分之說明圖。 1 架台 2 氣體 2a、3a、3b 開口部 2b 氣槽本體 3 安裝板 4 支持絕緣筒 4a 支持突出 部 4b 突出部 5 真空斷路器 6 真空開關管（VST) 7 可動軸 8 葉片支持端子 9 可撓導體 10 斷路器用操作部 11 絕緣桿 12 連接器 13 内附接地 開 關 的斷 電 器 15 内附接地 開 關 的斷 器用操作部 16 真空開關 管 之 固定 側 端子 17 固定端子 18 入口側端子 20 開口部 21 固體絕緣母線 22 母線用套 管 22a 内部導體 25 電纜連接用 套 管 26 電纜端子 27 電力電纜 29 接地端子 30 套管 31 連接導體 32 蓋體314276.ptd Page 10 200412003 Brief description of drawings [Simplified description of drawings] Fig. 1 shows a side sectional view of an embodiment of a gas-insulated switchgear of the present invention. Fig. 2 is an explanatory diagram of a ground terminal detection bus section in the gas-insulated switchgear of the present invention. 1 Stand 2 Gas 2a, 3a, 3b Opening 2b Air tank body 3 Mounting plate 4 Supporting insulation tube 4a Supporting protrusion 4b Protrusion 5 Vacuum circuit breaker 6 Vacuum switch tube (VST) 7 Movable shaft 8 Blade support terminal 9 Flexible Conductor 10 Breaker operation part 11 Insulation rod 12 Connector 13 Breaker with ground switch 15 Breaker operation part with ground switch 16 Fixed side terminal of vacuum switch tube 17 Fixed terminal 18 Inlet side terminal 20 Opening section 21 Solid insulated busbar 22 Busbar bushing 22a Internal conductor 25 Cable connection bushing 26 Cable terminal 27 Power cable 29 Ground terminal 30 Bushing 31 Connection conductor 32 Cover
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